79668805 has 16 divisors (see below), whose sum is σ = 102539520. Its totient is φ = 59237568.

The previous prime is 79668793. The next prime is 79668811. The reversal of 79668805 is 50886697.

It is a cyclic number.

It is not a de Polignac number, because 79668805 - 2⁵ = 79668773 is a prime.

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, 2877 + ... + 12946.

It is an arithmetic number, because the mean of its divisors is an integer number (6408720).

Almost surely, 2^79668805 is an apocalyptic number.

It is an amenable number.

79668805 is a deficient number, since it is larger than the sum of its proper divisors (22870715).

79668805 is a wasteful number, since it uses less digits than its factorization.

79668805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15900.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 79668805 is about 8925.7383448094. The cubic root of 79668805 is about 430.2915005600.

The spelling of 79668805 in words is "seventy-nine million, six hundred sixty-eight thousand, eight hundred five".