634590638 has 8 divisors (see below), whose sum is σ = 1038421080. Its totient is φ = 288450280.

The previous prime is 634590629. The next prime is 634590667. The reversal of 634590638 is 836095436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 14422493 + ... + 14422536.

It is an arithmetic number, because the mean of its divisors is an integer number (129802635).

Almost surely, 2^634590638 is an apocalyptic number.

634590638 is a deficient number, since it is larger than the sum of its proper divisors (403830442).

634590638 is a wasteful number, since it uses less digits than its factorization.

634590638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28845042.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 634590638 is about 25191.0825094913. The cubic root of 634590638 is about 859.3390622159.

The spelling of 634590638 in words is "six hundred thirty-four million, five hundred ninety thousand, six hundred thirty-eight".