79664371 has 4 divisors (see below), whose sum is σ = 79689744. Its totient is φ = 79639000.

The previous prime is 79664357. The next prime is 79664399. The reversal of 79664371 is 17346697.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79664371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79664171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7180 + ... + 14521.

It is an arithmetic number, because the mean of its divisors is an integer number (19922436).

Almost surely, 2^79664371 is an apocalyptic number.

79664371 is a deficient number, since it is larger than the sum of its proper divisors (25373).

79664371 is a wasteful number, since it uses less digits than its factorization.

79664371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25372.

The product of its digits is 190512, while the sum is 43.

The square root of 79664371 is about 8925.4899585401. The cubic root of 79664371 is about 430.2835177286.

The spelling of 79664371 in words is "seventy-nine million, six hundred sixty-four thousand, three hundred seventy-one".