79906663 has 8 divisors (see below), whose sum is σ = 82026000. Its totient is φ = 77795520.

The previous prime is 79906621. The next prime is 79906693. The reversal of 79906663 is 36660997.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79906663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79906693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21088 + ... + 24586.

It is an arithmetic number, because the mean of its divisors is an integer number (10253250).

Almost surely, 2^79906663 is an apocalyptic number.

79906663 is a deficient number, since it is larger than the sum of its proper divisors (2119337).

79906663 is a wasteful number, since it uses less digits than its factorization.

79906663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097.

The product of its (nonzero) digits is 367416, while the sum is 46.

The square root of 79906663 is about 8939.0526903023. The cubic root of 79906663 is about 430.7192990684.

The spelling of 79906663 in words is "seventy-nine million, nine hundred six thousand, six hundred sixty-three".