79500613 has 2 divisors, whose sum is σ = 79500614. Its totient is φ = 79500612.

The previous prime is 79500607. The next prime is 79500649. The reversal of 79500613 is 31600597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61199329 + 18301284 = 7823^2 + 4278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79500613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79500683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39750306 + 39750307.

It is an arithmetic number, because the mean of its divisors is an integer number (39750307).

Almost surely, 2^79500613 is an apocalyptic number.

It is an amenable number.

79500613 is a deficient number, since it is larger than the sum of its proper divisors (1).

79500613 is an equidigital number, since it uses as much as digits as its factorization.

79500613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 79500613 is about 8916.3116253303. The cubic root of 79500613 is about 429.9884853596.

The spelling of 79500613 in words is "seventy-nine million, five hundred thousand, six hundred thirteen".