72316565 has 8 divisors (see below), whose sum is σ = 91347360. Its totient is φ = 54808272.

The previous prime is 72316561. The next prime is 72316567. The reversal of 72316565 is 56561327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72316565 - 2² = 72316561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72316561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380519 + ... + 380708.

It is an arithmetic number, because the mean of its divisors is an integer number (11418420).

Almost surely, 2^72316565 is an apocalyptic number.

It is an amenable number.

72316565 is a deficient number, since it is larger than the sum of its proper divisors (19030795).

72316565 is a wasteful number, since it uses less digits than its factorization.

72316565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761251.

The product of its digits is 37800, while the sum is 35.

The square root of 72316565 is about 8503.9146867781. The cubic root of 72316565 is about 416.6255785261.

The spelling of 72316565 in words is "seventy-two million, three hundred sixteen thousand, five hundred sixty-five".