79975166 has 4 divisors (see below), whose sum is σ = 119962752. Its totient is φ = 39987582.

The previous prime is 79975139. The next prime is 79975169. The reversal of 79975166 is 66157997.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79975169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19993790 + ... + 19993793.

It is an arithmetic number, because the mean of its divisors is an integer number (29990688).

Almost surely, 2^79975166 is an apocalyptic number.

79975166 is a deficient number, since it is larger than the sum of its proper divisors (39987586).

79975166 is a wasteful number, since it uses less digits than its factorization.

79975166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39987585.

The product of its digits is 714420, while the sum is 50.

The square root of 79975166 is about 8942.8835394407. The cubic root of 79975166 is about 430.8423473661.

The spelling of 79975166 in words is "seventy-nine million, nine hundred seventy-five thousand, one hundred sixty-six".