72637976 has 16 divisors (see below), whose sum is σ = 136299240. Its totient is φ = 36291520.

The previous prime is 72637967. The next prime is 72637997. The reversal of 72637976 is 67973627.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72637976.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11756 + ... + 16836.

Almost surely, 2^72637976 is an apocalyptic number.

It is an amenable number.

72637976 is a deficient number, since it is larger than the sum of its proper divisors (63661264).

72637976 is a wasteful number, since it uses less digits than its factorization.

72637976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874 (or 6870 counting only the distinct ones).

The product of its digits is 666792, while the sum is 47.

The square root of 72637976 is about 8522.7915614545. The cubic root of 72637976 is about 417.2418971959.

The spelling of 72637976 in words is "seventy-two million, six hundred thirty-seven thousand, nine hundred seventy-six".