79686125 has 8 divisors (see below), whose sum is σ = 99448440. Its totient is φ = 63748800.

The previous prime is 79686109. The next prime is 79686149. The reversal of 79686125 is 52168697.

It can be written as a sum of positive squares in 4 ways, for example, as 315844 + 79370281 = 562^2 + 8909^2 .

It is not a de Polignac number, because 79686125 - 2⁴ = 79686109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318620 + ... + 318869.

It is an arithmetic number, because the mean of its divisors is an integer number (12431055).

Almost surely, 2^79686125 is an apocalyptic number.

It is an amenable number.

79686125 is a deficient number, since it is larger than the sum of its proper divisors (19762315).

79686125 is an equidigital number, since it uses as much as digits as its factorization.

79686125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637504 (or 637494 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 79686125 is about 8926.7085199417. The cubic root of 79686125 is about 430.3226800946.

The spelling of 79686125 in words is "seventy-nine million, six hundred eighty-six thousand, one hundred twenty-five".