64564886 has 4 divisors (see below), whose sum is σ = 96847332. Its totient is φ = 32282442.

The previous prime is 64564879. The next prime is 64564897. The reversal of 64564886 is 68846546.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68846546 = 2 ⋅34423273.

It is a self number, because there is not a number n which added to its sum of digits gives 64564886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16141220 + ... + 16141223.

It is an arithmetic number, because the mean of its divisors is an integer number (24211833).

Almost surely, 2^64564886 is an apocalyptic number.

64564886 is a deficient number, since it is larger than the sum of its proper divisors (32282446).

64564886 is a wasteful number, since it uses less digits than its factorization.

64564886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32282445.

The product of its digits is 1105920, while the sum is 47.

The square root of 64564886 is about 8035.2278125763. The cubic root of 64564886 is about 401.1734002968.

The spelling of 64564886 in words is "sixty-four million, five hundred sixty-four thousand, eight hundred eighty-six".