63972956 has 24 divisors (see below), whose sum is σ = 118646640. Its totient is φ = 30128000.

The previous prime is 63972941. The next prime is 63972971. The reversal of 63972956 is 65927936.

It is an interprime number because it is at equal distance from previous prime (63972941) and next prime (63972971).

It is a self number, because there is not a number n which added to its sum of digits gives 63972956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1970 + ... + 11481.

It is an arithmetic number, because the mean of its divisors is an integer number (4943610).

Almost surely, 2^63972956 is an apocalyptic number.

It is an amenable number.

63972956 is a deficient number, since it is larger than the sum of its proper divisors (54673684).

63972956 is a wasteful number, since it uses less digits than its factorization.

63972956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13525 (or 13523 counting only the distinct ones).

The product of its digits is 612360, while the sum is 47.

The square root of 63972956 is about 7998.3095714032. The cubic root of 63972956 is about 399.9436503955.

The spelling of 63972956 in words is "sixty-three million, nine hundred seventy-two thousand, nine hundred fifty-six".