636976056 has 32 divisors (see below), whose sum is σ = 1593619200. Its totient is φ = 212168160.

The previous prime is 636976051. The next prime is 636976133. The reversal of 636976056 is 650679636.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 636975996 and 636976014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636976051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25921 + ... + 44111.

It is an arithmetic number, because the mean of its divisors is an integer number (49800600).

Almost surely, 2^636976056 is an apocalyptic number.

It is an amenable number.

636976056 is an abundant number, since it is smaller than the sum of its proper divisors (956643144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636976056 is a wasteful number, since it uses less digits than its factorization.

636976056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19659 (or 19655 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 48.

The square root of 636976056 is about 25238.3845758797. The cubic root of 636976056 is about 860.4144640055.

The spelling of 636976056 in words is "six hundred thirty-six million, nine hundred seventy-six thousand, fifty-six".