79660978 has 8 divisors (see below), whose sum is σ = 119538972. Its totient is φ = 39814656.

The previous prime is 79660951. The next prime is 79661003. The reversal of 79660978 is 87906697.

It can be written as a sum of positive squares in 2 ways, for example, as 75986089 + 3674889 = 8717^2 + 1917^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75 + ... + 12622.

Almost surely, 2^79660978 is an apocalyptic number.

79660978 is a deficient number, since it is larger than the sum of its proper divisors (39877994).

79660978 is a wasteful number, since it uses less digits than its factorization.

79660978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15836.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 79660978 is about 8925.2998829171. The cubic root of 79660978 is about 430.2774088801.

The spelling of 79660978 in words is "seventy-nine million, six hundred sixty thousand, nine hundred seventy-eight".