72665996 has 24 divisors (see below), whose sum is σ = 141672720. Its totient is φ = 32380992.

The previous prime is 72665987. The next prime is 72666019. The reversal of 72665996 is 69956627.

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, 22586 + ... + 25601.

It is an arithmetic number, because the mean of its divisors is an integer number (5903030).

Almost surely, 2^72665996 is an apocalyptic number.

It is an amenable number.

72665996 is a deficient number, since it is larger than the sum of its proper divisors (69006724).

72665996 is a wasteful number, since it uses less digits than its factorization.

72665996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48233 (or 48231 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 50.

The square root of 72665996 is about 8524.4352305593. The cubic root of 72665996 is about 417.2955404629.

The spelling of 72665996 in words is "seventy-two million, six hundred sixty-five thousand, nine hundred ninety-six".