72967975 has 6 divisors (see below), whose sum is σ = 90480320. Its totient is φ = 58374360.

The previous prime is 72967969. The next prime is 72968009. The reversal of 72967975 is 57976927.

It is not a de Polignac number, because 72967975 - 2⁹ = 72967463 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1459335 + ... + 1459384.

Almost surely, 2^72967975 is an apocalyptic number.

72967975 is a deficient number, since it is larger than the sum of its proper divisors (17512345).

72967975 is a wasteful number, since it uses less digits than its factorization.

72967975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918729 (or 2918724 counting only the distinct ones).

The product of its digits is 1666980, while the sum is 52.

The square root of 72967975 is about 8542.1294183593. The cubic root of 72967975 is about 417.8727950195.

The spelling of 72967975 in words is "seventy-two million, nine hundred sixty-seven thousand, nine hundred seventy-five".