72657885 has 32 divisors (see below), whose sum is σ = 118483200. Its totient is φ = 38016000.

The previous prime is 72657857. The next prime is 72657887. The reversal of 72657885 is 58875627.

It is not a de Polignac number, because 72657885 - 2⁵ = 72657853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72657887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301365 + ... + 301605.

It is an arithmetic number, because the mean of its divisors is an integer number (3702600).

Almost surely, 2^72657885 is an apocalyptic number.

It is an amenable number.

72657885 is a deficient number, since it is larger than the sum of its proper divisors (45825315).

72657885 is a wasteful number, since it uses less digits than its factorization.

72657885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its digits is 940800, while the sum is 48.

The square root of 72657885 is about 8523.9594672898. The cubic root of 72657885 is about 417.2800136679.

The spelling of 72657885 in words is "seventy-two million, six hundred fifty-seven thousand, eight hundred eighty-five".