79605805 has 16 divisors (see below), whose sum is σ = 98172144. Its totient is φ = 61931520.

The previous prime is 79605761. The next prime is 79605817. The reversal of 79605805 is 50850697.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 644809 + 78960996 = 803^2 + 8886^2 .

It is not a de Polignac number, because 79605805 - 2⁷ = 79605677 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 15 ways as a sum of consecutive naturals, for example, 117949 + ... + 118621.

It is an arithmetic number, because the mean of its divisors is an integer number (6135759).

Almost surely, 2^79605805 is an apocalyptic number.

It is an amenable number.

79605805 is a deficient number, since it is larger than the sum of its proper divisors (18566339).

79605805 is a wasteful number, since it uses less digits than its factorization.

79605805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 79605805 is about 8922.2085270408. The cubic root of 79605805 is about 430.1780495750.

The spelling of 79605805 in words is "seventy-nine million, six hundred five thousand, eight hundred five".