634866916 has 12 divisors (see below), whose sum is σ = 1111737088. Its totient is φ = 317227752.

The previous prime is 634866901. The next prime is 634866943. The reversal of 634866916 is 619668436.

It is a self number, because there is not a number n which added to its sum of digits gives 634866916.

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, 44376 + ... + 56911.

Almost surely, 2^634866916 is an apocalyptic number.

It is an amenable number.

634866916 is a deficient number, since it is larger than the sum of its proper divisors (476870172).

634866916 is a wasteful number, since it uses less digits than its factorization.

634866916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102858 (or 102856 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The square root of 634866916 is about 25196.5655596155. The cubic root of 634866916 is about 859.4637525897.

The spelling of 634866916 in words is "six hundred thirty-four million, eight hundred sixty-six thousand, nine hundred sixteen".