72310693 has 16 divisors (see below), whose sum is σ = 91872256. Its totient is φ = 55365120.

The previous prime is 72310669. The next prime is 72310703. The reversal of 72310693 is 39601327.

It is a cyclic number.

It is not a de Polignac number, because 72310693 - 2¹⁷ = 72179621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72310633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9996 + ... + 15637.

It is an arithmetic number, because the mean of its divisors is an integer number (5742016).

Almost surely, 2^72310693 is an apocalyptic number.

It is an amenable number.

72310693 is a deficient number, since it is larger than the sum of its proper divisors (19561563).

72310693 is a wasteful number, since it uses less digits than its factorization.

72310693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25684.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 72310693 is about 8503.5694270112. The cubic root of 72310693 is about 416.6143017571.

The spelling of 72310693 in words is "seventy-two million, three hundred ten thousand, six hundred ninety-three".