79966685 has 8 divisors (see below), whose sum is σ = 96391680. Its totient is φ = 63685584.

The previous prime is 79966637. The next prime is 79966709. The reversal of 79966685 is 58666997.

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 79966685 - 2²⁰ = 78918109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79966685.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34745 + ... + 36974.

It is an arithmetic number, because the mean of its divisors is an integer number (12048960).

Almost surely, 2^79966685 is an apocalyptic number.

It is an amenable number.

79966685 is a deficient number, since it is larger than the sum of its proper divisors (16424995).

79966685 is a wasteful number, since it uses less digits than its factorization.

79966685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71947.

The product of its digits is 4898880, while the sum is 56.

The square root of 79966685 is about 8942.4093509523. The cubic root of 79966685 is about 430.8271172087.

The spelling of 79966685 in words is "seventy-nine million, nine hundred sixty-six thousand, six hundred eighty-five".