634690976 has 12 divisors (see below), whose sum is σ = 1249547922. Its totient is φ = 317345472.

The previous prime is 634690949. The next prime is 634690999. The reversal of 634690976 is 679096436.

It can be written as a sum of positive squares in only one way, i.e., 604176400 + 30514576 = 24580^2 + 5524^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9917015 + ... + 9917078.

Almost surely, 2^634690976 is an apocalyptic number.

It is an amenable number.

634690976 is a deficient number, since it is larger than the sum of its proper divisors (614856946).

634690976 is a wasteful number, since it uses less digits than its factorization.

634690976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19834103 (or 19834095 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 50.

The square root of 634690976 is about 25193.0739688510. The cubic root of 634690976 is about 859.3843511595.

The spelling of 634690976 in words is "six hundred thirty-four million, six hundred ninety thousand, nine hundred seventy-six".