79615775 has 12 divisors (see below), whose sum is σ = 99704184. Its totient is φ = 63060000.

The previous prime is 79615741. The next prime is 79615793. The reversal of 79615775 is 57751697.

It is not a de Polignac number, because 79615775 - 2¹⁴ = 79599391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13241 + ... + 18290.

It is an arithmetic number, because the mean of its divisors is an integer number (8308682).

Almost surely, 2^79615775 is an apocalyptic number.

79615775 is a deficient number, since it is larger than the sum of its proper divisors (20088409).

79615775 is a wasteful number, since it uses less digits than its factorization.

79615775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31642 (or 31637 counting only the distinct ones).

The product of its digits is 463050, while the sum is 47.

The square root of 79615775 is about 8922.7672277159. The cubic root of 79615775 is about 430.1960076293.

The spelling of 79615775 in words is "seventy-nine million, six hundred fifteen thousand, seven hundred seventy-five".