631576564 has 12 divisors (see below), whose sum is σ = 1105459488. Its totient is φ = 315731000.

The previous prime is 631576531. The next prime is 631576577. The reversal of 631576564 is 465675136.

It is a self number, because there is not a number n which added to its sum of digits gives 631576564.

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, 19209 + ... + 40399.

It is an arithmetic number, because the mean of its divisors is an integer number (92121624).

Almost surely, 2^631576564 is an apocalyptic number.

It is an amenable number.

631576564 is a deficient number, since it is larger than the sum of its proper divisors (473882924).

631576564 is a wasteful number, since it uses less digits than its factorization.

631576564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28646 (or 28644 counting only the distinct ones).

The product of its digits is 453600, while the sum is 43.

The square root of 631576564 is about 25131.1870790060. The cubic root of 631576564 is about 857.9763868580.

The spelling of 631576564 in words is "six hundred thirty-one million, five hundred seventy-six thousand, five hundred sixty-four".