634920968 has 16 divisors (see below), whose sum is σ = 1298702160. Its totient is φ = 288600400.

The previous prime is 634920829. The next prime is 634920989. The reversal of 634920968 is 869029436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3607418 + ... + 3607593.

It is an arithmetic number, because the mean of its divisors is an integer number (81168885).

Almost surely, 2^634920968 is an apocalyptic number.

It is an amenable number.

634920968 is an abundant number, since it is smaller than the sum of its proper divisors (663781192).

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

634920968 is a wasteful number, since it uses less digits than its factorization.

634920968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7215028 (or 7215024 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 634920968 is about 25197.6381432864. The cubic root of 634920968 is about 859.4881432220.

The spelling of 634920968 in words is "six hundred thirty-four million, nine hundred twenty thousand, nine hundred sixty-eight".