631725964 has 12 divisors (see below), whose sum is σ = 1106146888. Its totient is φ = 315684000.

The previous prime is 631725961. The next prime is 631725971. The reversal of 631725964 is 469527136.

It is a hoax number, since the sum of its digits (43) 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 631725964.

It is not an unprimeable number, because it can be changed into a prime (631725961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36642 + ... + 51049.

Almost surely, 2^631725964 is an apocalyptic number.

It is an amenable number.

631725964 is a deficient number, since it is larger than the sum of its proper divisors (474420924).

631725964 is a wasteful number, since it uses less digits than its factorization.

631725964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89496 (or 89494 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 631725964 is about 25134.1593056143. The cubic root of 631725964 is about 858.0440332177.

The spelling of 631725964 in words is "six hundred thirty-one million, seven hundred twenty-five thousand, nine hundred sixty-four".