64979313 has 16 divisors (see below), whose sum is σ = 99348480. Its totient is φ = 37006416.

The previous prime is 64979311. The next prime is 64979339. The reversal of 64979313 is 31397946.

It is not a de Polignac number, because 64979313 - 2¹ = 64979311 is a prime.

It is a super-2 number, since 2×64979313² = 8444622235903938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64979311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1408 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (6209280).

Almost surely, 2^64979313 is an apocalyptic number.

It is an amenable number.

64979313 is a deficient number, since it is larger than the sum of its proper divisors (34369167).

64979313 is a wasteful number, since it uses less digits than its factorization.

64979313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10396.

The product of its digits is 122472, while the sum is 42.

The square root of 64979313 is about 8060.9746929264. The cubic root of 64979313 is about 402.0299165875.

The spelling of 64979313 in words is "sixty-four million, nine hundred seventy-nine thousand, three hundred thirteen".