72165367 has 4 divisors (see below), whose sum is σ = 72393336. Its totient is φ = 71937400.

The previous prime is 72165307. The next prime is 72165377. The reversal of 72165367 is 76356127.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72165367 - 2²³ = 63776759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72165307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113509 + ... + 114142.

It is an arithmetic number, because the mean of its divisors is an integer number (18098334).

Almost surely, 2^72165367 is an apocalyptic number.

72165367 is a deficient number, since it is larger than the sum of its proper divisors (227969).

72165367 is a wasteful number, since it uses less digits than its factorization.

72165367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227968.

The product of its digits is 52920, while the sum is 37.

The square root of 72165367 is about 8495.0201294641. The cubic root of 72165367 is about 416.3350185106.

The spelling of 72165367 in words is "seventy-two million, one hundred sixty-five thousand, three hundred sixty-seven".