79657983 has 24 divisors (see below), whose sum is σ = 119620800. Its totient is φ = 51019584.

The previous prime is 79657967. The next prime is 79657999. The reversal of 79657983 is 38975697.

It is an interprime number because it is at equal distance from previous prime (79657967) and next prime (79657999).

It is not a de Polignac number, because 79657983 - 2⁴ = 79657967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79657583) 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, 61741 + ... + 63017.

It is an arithmetic number, because the mean of its divisors is an integer number (4984200).

Almost surely, 2^79657983 is an apocalyptic number.

79657983 is a deficient number, since it is larger than the sum of its proper divisors (39962817).

79657983 is a wasteful number, since it uses less digits than its factorization.

79657983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551 (or 1548 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 79657983 is about 8925.1320998627. The cubic root of 79657983 is about 430.2720164575.

The spelling of 79657983 in words is "seventy-nine million, six hundred fifty-seven thousand, nine hundred eighty-three".