79659975 has 24 divisors (see below), whose sum is σ = 132312960. Its totient is φ = 42289120.

The previous prime is 79659973. The next prime is 79659991. The reversal of 79659975 is 57995697.

It is not a de Polignac number, because 79659975 - 2¹ = 79659973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79659973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14686 + ... + 19364.

It is an arithmetic number, because the mean of its divisors is an integer number (5513040).

Almost surely, 2^79659975 is an apocalyptic number.

79659975 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

79659975 is a deficient number, since it is larger than the sum of its proper divisors (52652985).

79659975 is a wasteful number, since it uses less digits than its factorization.

79659975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919 (or 4914 counting only the distinct ones).

The product of its digits is 5358150, while the sum is 57.

The square root of 79659975 is about 8925.2436941520. The cubic root of 79659975 is about 430.2756030188.

The spelling of 79659975 in words is "seventy-nine million, six hundred fifty-nine thousand, nine hundred seventy-five".