79725713 has 4 divisors (see below), whose sum is σ = 81880500. Its totient is φ = 77570928.

The previous prime is 79725673. The next prime is 79725721. The reversal of 79725713 is 31752797.

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 48678529 + 31047184 = 6977^2 + 5572^2 .

It is a cyclic number.

It is not a de Polignac number, because 79725713 - 2⁶ = 79725649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79725743) 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, 1077338 + ... + 1077411.

It is an arithmetic number, because the mean of its divisors is an integer number (20470125).

Almost surely, 2^79725713 is an apocalyptic number.

It is an amenable number.

79725713 is a deficient number, since it is larger than the sum of its proper divisors (2154787).

79725713 is a wasteful number, since it uses less digits than its factorization.

79725713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154786.

The product of its digits is 92610, while the sum is 41.

The square root of 79725713 is about 8928.9256352598. The cubic root of 79725713 is about 430.3939296124.

The spelling of 79725713 in words is "seventy-nine million, seven hundred twenty-five thousand, seven hundred thirteen".