72475865 has 16 divisors (see below), whose sum is σ = 108432000. Its totient is φ = 45179520.

The previous prime is 72475853. The next prime is 72475891. The reversal of 72475865 is 56857427.

It is not a de Polignac number, because 72475865 - 2¹⁰ = 72474841 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93740 + ... + 94509.

It is an arithmetic number, because the mean of its divisors is an integer number (6777000).

Almost surely, 2^72475865 is an apocalyptic number.

It is an amenable number.

72475865 is a deficient number, since it is larger than the sum of its proper divisors (35956135).

72475865 is a wasteful number, since it uses less digits than its factorization.

72475865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188272.

The product of its digits is 470400, while the sum is 44.

The square root of 72475865 is about 8513.2758089939. The cubic root of 72475865 is about 416.9312705057.

The spelling of 72475865 in words is "seventy-two million, four hundred seventy-five thousand, eight hundred sixty-five".