79708565 has 4 divisors (see below), whose sum is σ = 95650284. Its totient is φ = 63766848.

The previous prime is 79708537. The next prime is 79708567. The reversal of 79708565 is 56580797.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18852964 + 60855601 = 4342^2 + 7801^2 .

It is a cyclic number.

It is not a de Polignac number, because 79708565 - 2⁸ = 79708309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79708567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7970852 + ... + 7970861.

It is an arithmetic number, because the mean of its divisors is an integer number (23912571).

Almost surely, 2^79708565 is an apocalyptic number.

It is an amenable number.

79708565 is a deficient number, since it is larger than the sum of its proper divisors (15941719).

79708565 is a wasteful number, since it uses less digits than its factorization.

79708565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15941718.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 79708565 is about 8927.9653337141. The cubic root of 79708565 is about 430.3630699560.

The spelling of 79708565 in words is "seventy-nine million, seven hundred eight thousand, five hundred sixty-five".