634368656 has 20 divisors (see below), whose sum is σ = 1293778800. Its totient is φ = 300490272.

The previous prime is 634368641. The next prime is 634368673. The reversal of 634368656 is 656863436.

634368656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 634368656.

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, 1043066 + ... + 1043673.

It is an arithmetic number, because the mean of its divisors is an integer number (64688940).

Almost surely, 2^634368656 is an apocalyptic number.

It is an amenable number.

634368656 is an abundant number, since it is smaller than the sum of its proper divisors (659410144).

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

634368656 is a wasteful number, since it uses less digits than its factorization.

634368656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086766 (or 2086760 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 47.

The square root of 634368656 is about 25186.6761602241. The cubic root of 634368656 is about 859.2388506049.

The spelling of 634368656 in words is "six hundred thirty-four million, three hundred sixty-eight thousand, six hundred fifty-six".