64564005 has 64 divisors (see below), whose sum is σ = 118609920. Its totient is φ = 29702400.

The previous prime is 64563997. The next prime is 64564009. The reversal of 64564005 is 50046546.

It is not a de Polignac number, because 64564005 - 2³ = 64563997 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64564009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 492790 + ... + 492920.

It is an arithmetic number, because the mean of its divisors is an integer number (1853280).

Almost surely, 2^64564005 is an apocalyptic number.

It is an amenable number.

64564005 is a deficient number, since it is larger than the sum of its proper divisors (54045915).

64564005 is a wasteful number, since it uses less digits than its factorization.

64564005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 64564005 is about 8035.1729912927. The cubic root of 64564005 is about 401.1715755930.

The spelling of 64564005 in words is "sixty-four million, five hundred sixty-four thousand, five".