72864475 has 6 divisors (see below), whose sum is σ = 90351980. Its totient is φ = 58291560.

The previous prime is 72864461. The next prime is 72864497. The reversal of 72864475 is 57446827.

It is not a de Polignac number, because 72864475 - 2¹³ = 72856283 is a prime.

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, 1457265 + ... + 1457314.

Almost surely, 2^72864475 is an apocalyptic number.

72864475 is a deficient number, since it is larger than the sum of its proper divisors (17487505).

72864475 is a wasteful number, since it uses less digits than its factorization.

72864475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914589 (or 2914584 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The square root of 72864475 is about 8536.0690601705. The cubic root of 72864475 is about 417.6751270271.

The spelling of 72864475 in words is "seventy-two million, eight hundred sixty-four thousand, four hundred seventy-five".