634955972 has 12 divisors (see below), whose sum is σ = 1269912000. Its totient is φ = 272123976.

The previous prime is 634955941. The next prime is 634955999. The reversal of 634955972 is 279559436.

It is a happy number.

634955972 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 634955972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11338472 + ... + 11338527.

It is an arithmetic number, because the mean of its divisors is an integer number (105826000).

Almost surely, 2^634955972 is an apocalyptic number.

It is an amenable number.

634955972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

634955972 is a wasteful number, since it uses less digits than its factorization.

634955972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22677010 (or 22677008 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 50.

The square root of 634955972 is about 25198.3327226227. The cubic root of 634955972 is about 859.5039378230.

The spelling of 634955972 in words is "six hundred thirty-four million, nine hundred fifty-five thousand, nine hundred seventy-two".