72864607 has 2 divisors, whose sum is σ = 72864608. Its totient is φ = 72864606.

The previous prime is 72864593. The next prime is 72864613. The reversal of 72864607 is 70646827.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72864607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72864607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72864697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36432303 + 36432304.

It is an arithmetic number, because the mean of its divisors is an integer number (36432304).

Almost surely, 2^72864607 is an apocalyptic number.

72864607 is a deficient number, since it is larger than the sum of its proper divisors (1).

72864607 is an equidigital number, since it uses as much as digits as its factorization.

72864607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 72864607 is about 8536.0767920632. The cubic root of 72864607 is about 417.6753792446.

The spelling of 72864607 in words is "seventy-two million, eight hundred sixty-four thousand, six hundred seven".