79688975 has 12 divisors (see below), whose sum is σ = 98925960. Its totient is φ = 63679200.

The previous prime is 79688971. The next prime is 79688981. The reversal of 79688975 is 57988697.

It is not a de Polignac number, because 79688975 - 2² = 79688971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79688971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38261 + ... + 40289.

It is an arithmetic number, because the mean of its divisors is an integer number (8243830).

Almost surely, 2^79688975 is an apocalyptic number.

79688975 is a deficient number, since it is larger than the sum of its proper divisors (19236985).

79688975 is a wasteful number, since it uses less digits than its factorization.

79688975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610 (or 3605 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 59.

The square root of 79688975 is about 8926.8681518212. The cubic root of 79688975 is about 430.3278102433.

The spelling of 79688975 in words is "seventy-nine million, six hundred eighty-eight thousand, nine hundred seventy-five".