79664705 has 8 divisors (see below), whose sum is σ = 95764032. Its totient is φ = 63620848.

The previous prime is 79664693. The next prime is 79664759. The reversal of 79664705 is 50746697.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79664705 - 2⁸ = 79664449 is a prime.

It is a Duffinian number.

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, 10637 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (11970504).

Almost surely, 2^79664705 is an apocalyptic number.

It is an amenable number.

79664705 is a deficient number, since it is larger than the sum of its proper divisors (16099327).

79664705 is a wasteful number, since it uses less digits than its factorization.

79664705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27735.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 79664705 is about 8925.5086689779. The cubic root of 79664705 is about 430.2841190618.

The spelling of 79664705 in words is "seventy-nine million, six hundred sixty-four thousand, seven hundred five".