79727668 has 12 divisors (see below), whose sum is σ = 139844320. Its totient is φ = 39772152.

The previous prime is 79727663. The next prime is 79727737. The reversal of 79727668 is 86672797.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79727663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20946 + ... + 24457.

Almost surely, 2^79727668 is an apocalyptic number.

It is an amenable number.

79727668 is a deficient number, since it is larger than the sum of its proper divisors (60116652).

79727668 is a wasteful number, since it uses less digits than its factorization.

79727668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45846 (or 45844 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 52.

The square root of 79727668 is about 8929.0351102457. The cubic root of 79727668 is about 430.3974475625.

The spelling of 79727668 in words is "seventy-nine million, seven hundred twenty-seven thousand, six hundred sixty-eight".