72659597 has 2 divisors, whose sum is σ = 72659598. Its totient is φ = 72659596.

The previous prime is 72659569. The next prime is 72659623. The reversal of 72659597 is 79595627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39262756 + 33396841 = 6266^2 + 5779^2 .

It is an emirp because it is prime and its reverse (79595627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72659597 - 2²⁶ = 5550733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72659497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36329798 + 36329799.

It is an arithmetic number, because the mean of its divisors is an integer number (36329799).

Almost surely, 2^72659597 is an apocalyptic number.

It is an amenable number.

72659597 is a deficient number, since it is larger than the sum of its proper divisors (1).

72659597 is an equidigital number, since it uses as much as digits as its factorization.

72659597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1190700, while the sum is 50.

The square root of 72659597 is about 8524.0598895127. The cubic root of 72659597 is about 417.2832910262.

The spelling of 72659597 in words is "seventy-two million, six hundred fifty-nine thousand, five hundred ninety-seven".