### About the Number 666 (six hundred sixty-six)

While posting a nBAB for the number 670, MathBabbler noticed there wasn't a nBAB for the number `666`.

```   MathBabbler Number Analyst (MBNA) output:
=========================================
666 is a natural, whole, integer
666 is even
666 proper divisors are: 1,2,3,6,9,18,37,74,111,222,333,
666 is abundant (sum of divisors is 816)
666 is unhappy
666 is not prime
666 has the prime factors: 2*3*3*37
666 sum prime factors: 2...3...3...37...answer: 45
666 is undulating
666 is palindromic
666 in octal is 01232
666 in binary is 1010011010 (is odious)
666 nearest square numbers: -41...10 (625 [25]...676 [26])
sqrt(666) = 25.807
ln(666) = 6.50129
log(666) = 2.82347
666 reciprocal is .00150150150150150150150150150150
666 is an apocalyptic power
666! is 1.01063e+1593
666 is 211.994 Pi years
666 is 33 score and 6 years
666 written as a Roman numeral is DCLXVI
```

`[Wikipedia]` `666` is the sum of the first 36 natural numbers.

`[Wikipedia]` `666` is the sum of the squares of the first 7 prime numbers.

`[Wikipedia]` The Roman numeral representation of the number 666 (DCLXVI) uses once each the Roman numeral symbols with values under 1,000, occurring in descending order of their respective values (D = 500, C = 100, L = 50, X = 10, V = 5, I = 1).

`[Wikipedia]` Hexakosioihexekontahexaphobia is the "fear of the number six hundred sixty-six."

From "The Joy of Pi"... The first 144 digits of Pi add up to `666`. [And 144 equals (6 + 6) * (6 + 6).]

##### Update::2009.08.14

On 14 August 2009, MathBabbler posted his `666`th tweet to Twitter.com.

`666666` is 2,665,338.

MathBabbler uses the dc (reverse-polish) desk calculator which supports unlimited precision arithmetic. `666^666` is number that has 1908 digits and the pattern `666` occurs twice.

##### Update::2010.07.02

The `666`th BARS was posted on 2 July 2010.

##### Update::2014.08.22

nBAB# `666` was posted on 22 August 2014. nBAB# `666` was BAB# 4020 and it was a nBAB about the number 4020.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 10 April 2009