79564513 has 16 divisors (see below), whose sum is σ = 92425216. Its totient is φ = 67087440.

The previous prime is 79564493. The next prime is 79564549. The reversal of 79564513 is 31546597.

It is a de Polignac number, because none of the positive numbers 2^k-79564513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79574513) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151870 + ... + 152392.

It is an arithmetic number, because the mean of its divisors is an integer number (5776576).

Almost surely, 2^79564513 is an apocalyptic number.

It is an amenable number.

79564513 is a deficient number, since it is larger than the sum of its proper divisors (12860703).

79564513 is a wasteful number, since it uses less digits than its factorization.

79564513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844.

The product of its digits is 113400, while the sum is 40.

The square root of 79564513 is about 8919.8942258303. The cubic root of 79564513 is about 430.1036580816.

The spelling of 79564513 in words is "seventy-nine million, five hundred sixty-four thousand, five hundred thirteen".