72165875 has 8 divisors (see below), whose sum is σ = 90063168. Its totient is φ = 57732600.

The previous prime is 72165869. The next prime is 72165883. The reversal of 72165875 is 57856127.

It is not a de Polignac number, because 72165875 - 2⁴ = 72165859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288539 + ... + 288788.

It is an arithmetic number, because the mean of its divisors is an integer number (11257896).

Almost surely, 2^72165875 is an apocalyptic number.

72165875 is a deficient number, since it is larger than the sum of its proper divisors (17897293).

72165875 is an equidigital number, since it uses as much as digits as its factorization.

72165875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577342 (or 577332 counting only the distinct ones).

The product of its digits is 117600, while the sum is 41.

The square root of 72165875 is about 8495.0500292818. The cubic root of 72165875 is about 416.3359954229.

The spelling of 72165875 in words is "seventy-two million, one hundred sixty-five thousand, eight hundred seventy-five".