72316785 has 32 divisors (see below), whose sum is σ = 120010752. Its totient is φ = 37160640.

The previous prime is 72316771. The next prime is 72316789. The reversal of 72316785 is 58761327.

It is not a de Polignac number, because 72316785 - 2⁵ = 72316753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72316789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46470 + ... + 48000.

It is an arithmetic number, because the mean of its divisors is an integer number (3750336).

Almost surely, 2^72316785 is an apocalyptic number.

It is an amenable number.

72316785 is a deficient number, since it is larger than the sum of its proper divisors (47693967).

72316785 is a wasteful number, since it uses less digits than its factorization.

72316785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653.

The product of its digits is 70560, while the sum is 39.

The square root of 72316785 is about 8503.9276219874. The cubic root of 72316785 is about 416.6260010090.

The spelling of 72316785 in words is "seventy-two million, three hundred sixteen thousand, seven hundred eighty-five".