79561738 has 16 divisors (see below), whose sum is σ = 124851456. Its totient is φ = 37953520.

The previous prime is 79561711. The next prime is 79561747. The reversal of 79561738 is 83716597.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17820 + ... + 21832.

It is an arithmetic number, because the mean of its divisors is an integer number (7803216).

Almost surely, 2^79561738 is an apocalyptic number.

79561738 is a deficient number, since it is larger than the sum of its proper divisors (45289718).

79561738 is a wasteful number, since it uses less digits than its factorization.

79561738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4469.

The product of its digits is 317520, while the sum is 46.

The square root of 79561738 is about 8919.7386733020. The cubic root of 79561738 is about 430.0986577303.

The spelling of 79561738 in words is "seventy-nine million, five hundred sixty-one thousand, seven hundred thirty-eight".