64994259 has 16 divisors (see below), whose sum is σ = 97588224. Its totient is φ = 38119200.

The previous prime is 64994243. The next prime is 64994263. The reversal of 64994259 is 95249946.

It is not a de Polignac number, because 64994259 - 2⁴ = 64994243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64994239) 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, 30744 + ... + 32789.

It is an arithmetic number, because the mean of its divisors is an integer number (6099264).

Almost surely, 2^64994259 is an apocalyptic number.

64994259 is a deficient number, since it is larger than the sum of its proper divisors (32593965).

64994259 is a wasteful number, since it uses less digits than its factorization.

64994259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63578.

The product of its digits is 699840, while the sum is 48.

The square root of 64994259 is about 8061.9016987309. The cubic root of 64994259 is about 402.0607380814.

The spelling of 64994259 in words is "sixty-four million, nine hundred ninety-four thousand, two hundred fifty-nine".