72597479 has 2 divisors, whose sum is σ = 72597480. Its totient is φ = 72597478.

The previous prime is 72597457. The next prime is 72597509. The reversal of 72597479 is 97479527.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72597479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72597979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36298739 + 36298740.

It is an arithmetic number, because the mean of its divisors is an integer number (36298740).

Almost surely, 2^72597479 is an apocalyptic number.

72597479 is a deficient number, since it is larger than the sum of its proper divisors (1).

72597479 is an equidigital number, since it uses as much as digits as its factorization.

72597479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 50.

The square root of 72597479 is about 8520.4154241445. The cubic root of 72597479 is about 417.1643427855.

The spelling of 72597479 in words is "seventy-two million, five hundred ninety-seven thousand, four hundred seventy-nine".