79585717 has 2 divisors, whose sum is σ = 79585718. Its totient is φ = 79585716.

The previous prime is 79585697. The next prime is 79585729. The reversal of 79585717 is 71758597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75933796 + 3651921 = 8714^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 79585717 - 2²³ = 71197109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79585757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39792858 + 39792859.

It is an arithmetic number, because the mean of its divisors is an integer number (39792859).

Almost surely, 2^79585717 is an apocalyptic number.

It is an amenable number.

79585717 is a deficient number, since it is larger than the sum of its proper divisors (1).

79585717 is an equidigital number, since it uses as much as digits as its factorization.

79585717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617400, while the sum is 49.

The square root of 79585717 is about 8921.0827257682. The cubic root of 79585717 is about 430.1418623328.

The spelling of 79585717 in words is "seventy-nine million, five hundred eighty-five thousand, seven hundred seventeen".