634792864 has 12 divisors (see below), whose sum is σ = 1249748514. Its totient is φ = 317396416.

The previous prime is 634792853. The next prime is 634792913. The reversal of 634792864 is 468297436.

It can be written as a sum of positive squares in only one way, i.e., 602211600 + 32581264 = 24540^2 + 5708^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9918607 + ... + 9918670.

Almost surely, 2^634792864 is an apocalyptic number.

It is an amenable number.

634792864 is a deficient number, since it is larger than the sum of its proper divisors (614955650).

634792864 is a wasteful number, since it uses less digits than its factorization.

634792864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19837287 (or 19837279 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The square root of 634792864 is about 25195.0960307755. The cubic root of 634792864 is about 859.4303348330.

The spelling of 634792864 in words is "six hundred thirty-four million, seven hundred ninety-two thousand, eight hundred sixty-four".