72765715 has 16 divisors (see below), whose sum is σ = 96468480. Its totient is φ = 52247520.

The previous prime is 72765713. The next prime is 72765739. The reversal of 72765715 is 51756727.

It is not a de Polignac number, because 72765715 - 2¹ = 72765713 is a prime.

It is a super-2 number, since 2×72765715² = 10589698558922450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72765713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4029 + ... + 12718.

It is an arithmetic number, because the mean of its divisors is an integer number (6029280).

Almost surely, 2^72765715 is an apocalyptic number.

72765715 is a deficient number, since it is larger than the sum of its proper divisors (23702765).

72765715 is a wasteful number, since it uses less digits than its factorization.

72765715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16842.

The product of its digits is 102900, while the sum is 40.

The square root of 72765715 is about 8530.2822344867. The cubic root of 72765715 is about 417.4863370575.

The spelling of 72765715 in words is "seventy-two million, seven hundred sixty-five thousand, seven hundred fifteen".