63631372 has 12 divisors (see below), whose sum is σ = 127262800. Its totient is φ = 27270576.

The previous prime is 63631349. The next prime is 63631397. The reversal of 63631372 is 27313636.

63631372 is an admirable 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, 1136247 + ... + 1136302.

Almost surely, 2^63631372 is an apocalyptic number.

It is an amenable number.

63631372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63631372 is a wasteful number, since it uses less digits than its factorization.

63631372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272560 (or 2272558 counting only the distinct ones).

The product of its digits is 13608, while the sum is 31.

The square root of 63631372 is about 7976.9274786725. The cubic root of 63631372 is about 399.2305457997.

The spelling of 63631372 in words is "sixty-three million, six hundred thirty-one thousand, three hundred seventy-two".