65108979 has 12 divisors (see below), whose sum is σ = 101280816. Its totient is φ = 40066992.

The previous prime is 65108971. The next prime is 65108983. The reversal of 65108979 is 97980156.

It is not a de Polignac number, because 65108979 - 2³ = 65108971 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65108971) 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, 278127 + ... + 278360.

It is an arithmetic number, because the mean of its divisors is an integer number (8440068).

Almost surely, 2^65108979 is an apocalyptic number.

65108979 is a deficient number, since it is larger than the sum of its proper divisors (36171837).

65108979 is a wasteful number, since it uses less digits than its factorization.

65108979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556506 (or 556503 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 65108979 is about 8069.0135084780. The cubic root of 65108979 is about 402.2971553559.

The spelling of 65108979 in words is "sixty-five million, one hundred eight thousand, nine hundred seventy-nine".