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8. 666
666 is an abundant number. It is the sum of the squares of the first seven prime numbers.

Since 36 is both square and triangular, 666 is the sixth number of the form n2(n2 + 1) / 2 (triangular squares) and the eighth number of the form n(n + 1)(n2 + n + 2) / 8 (doubly triangular numbers.)

There is no number whose value of Euler's totient function ö is 666, making it a nontotient.

The harmonic mean of the digits of 666 is an integer: 3/(1/6 + 1/6 + 1/6) = 6. 666 is the 54th number with this property.

In base 10, 666 is a palindromic number, a repdigit and a Smith number. A prime reciprocal magic square based on 1/149 in base 10 has a magic total of 666.

The Roman numeral representation of the number 666 (DCLXVI) uses once each the Roman numeral symbols with values under 1,000, and they occur in exact reverse order of their respective values (D = 500, C = 100, L = 50, X = 10, V = 5, I = 1).

I had no idea that the number 666 had any relavance to a legitimate mathmatical formula!

by May 23, 2006 add a video
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1. 666
The Mark of the beast, and the men who follow the beast of the earth will bear this mark to display their allegiance to the beast. It has been disputed by some scholars that certain numeric ciphers would translate it over to certain words, names, etc... For example, one of the more popular translations was Nero Caesar, and before that, Lateinos, etc...

"...And that number is 666."

Widely implied that it was 666 because it was an imperfect number to represent the impurities of man and their evildoings and sinful ways.

Read the book of revelations, at the end of the New Testament; it tells all about that, the seven seals, the apocalypse, Armageddon, Megiddo, etc...
666 is NOT the number of Satan. 666 is best described as a number of lawlessness, secularity, atheism, and sin - all things which many members of the human race indulge in. Emblazing the numbers "666" on your skin or affixing it to your screen name does not make you a Satanist - it makes you look like a fucking retard!
by Mar 24, 2004 add a video
2. 666
666 Six hundred and sixty six. The number before 667 and after 665. You will get to this number if you keep counting. Nothing but a number. also expressed as 1010011010 or 29A.
i saw 666 on my door oh god i'm so scared ! mamma mia!
by Oct 29, 2004 add a video
3. 666
something you do not yell in the middle of church.
"The word of the devil has spoken. 666! 666! 666!"
by Mar 27, 2004 add a video
4. 666
The number of the Beast/Anti Christ...usually used by trendy goth 14 year olds who want to seem evil.
That goth kid wrote 666 on his backpack, what a retard.
by May 16, 2003 add a video
5. 666
Retarded schoolkids shout this at me in the street. I think it means "Hello, please take my bag and throw it into the road!"

So I oblige.
Child: Arggghhh, me mobile, me westwood choons!!

Me:(Smiles with quiet satisfaction at a job well done.)
by Feb 11, 2005 add a video
6. 666
666, the number of the beast.

664, the bloke next door.
by Apr 20, 2004 add a video
7. 666
The Mark of the Beast
by anonymous Jan 13, 2003 add a video