79211664 has 60 divisors (see below), whose sum is σ = 253354816. Its totient is φ = 22631616.

The previous prime is 79211663. The next prime is 79211707. The reversal of 79211664 is 46611297.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (79211663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38284 + ... + 40299.

Almost surely, 2^79211664 is an apocalyptic number.

It is an amenable number.

79211664 is an abundant number, since it is smaller than the sum of its proper divisors (174143152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79211664 is a wasteful number, since it uses less digits than its factorization.

79211664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78604 (or 78595 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 79211664 is about 8900.0934826551. The cubic root of 79211664 is about 429.4669146553.

The spelling of 79211664 in words is "seventy-nine million, two hundred eleven thousand, six hundred sixty-four".