72330613 has 2 divisors, whose sum is σ = 72330614. Its totient is φ = 72330612.

The previous prime is 72330581. The next prime is 72330649. The reversal of 72330613 is 31603327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49463089 + 22867524 = 7033^2 + 4782^2 .

It is a cyclic number.

It is not a de Polignac number, because 72330613 - 2⁵ = 72330581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72330673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36165306 + 36165307.

It is an arithmetic number, because the mean of its divisors is an integer number (36165307).

Almost surely, 2^72330613 is an apocalyptic number.

It is an amenable number.

72330613 is a deficient number, since it is larger than the sum of its proper divisors (1).

72330613 is an equidigital number, since it uses as much as digits as its factorization.

72330613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 72330613 is about 8504.7406192076. The cubic root of 72330613 is about 416.6525542598.

The spelling of 72330613 in words is "seventy-two million, three hundred thirty thousand, six hundred thirteen".