72663165 has 24 divisors (see below), whose sum is σ = 127135008. Its totient is φ = 38388960.

The previous prime is 72663133. The next prime is 72663179. The reversal of 72663165 is 56136627.

It is not a de Polignac number, because 72663165 - 2⁵ = 72663133 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2731 + ... + 12360.

It is an arithmetic number, because the mean of its divisors is an integer number (5297292).

Almost surely, 2^72663165 is an apocalyptic number.

It is an amenable number.

72663165 is a deficient number, since it is larger than the sum of its proper divisors (54471843).

72663165 is a wasteful number, since it uses less digits than its factorization.

72663165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15209 (or 15206 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 72663165 is about 8524.2691768855. The cubic root of 72663165 is about 417.2901212430.

The spelling of 72663165 in words is "seventy-two million, six hundred sixty-three thousand, one hundred sixty-five".