### About the Number 636 (six hundred thirty-six)

MathBabbler posted BARS# `636` on 19 March 2010.

```   MathBabbler Number Analyst (MBNA) output:
=========================================
636 is a natural, whole, integer
636 is even
636 proper divisors are: 1,2,3,4,6,12,53,106,159,212,318,
636 is refactorable (evenly divisable by # of divisors)
636 is abundant (sum of divisors is 876)
636 is unhappy
636 is not a Harshad number
636 is not prime
636 has the prime factors: 2*2*3*53 (sum=60)
636 is a Smith number
636 sum of prime factors is: 60
636 is undulating
636 is palindromic
636 is the sum of 10 consecutive primes
636 = 43 + 47 + 53 + 59 + 61 + 67 + 71 + 73 + 79 + 83
636 in octal is 01174
636 in binary is 1001111100 (is evil)
636 nearest square numbers: -11...40 (625...676 [26])
sqrt(636) = 25.219
ln(636) = 6.4552
log(636) = 2.80346
636 reciprocal is .00157232704402515723270440251572
636! is 3.87535e+1508
636 is 202.445 Pi years
636 is 31 score and 16 years
636 written as a Roman numeral is DCXXXVI
636 = 160^2 - 158^2 and 2 * (160 + 158) = 636
```

`636` is a triple-X Roman numeral.

`636` is a Smith number and it had been a while since a nBAB was created for a Smith number. A number is a Smith number if the sum of its digits equals the sum of the digits of its prime factors.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 19 March 2010