64000564 has 12 divisors (see below), whose sum is σ = 115863300. Its totient is φ = 30896768.

The previous prime is 64000561. The next prime is 64000571. The reversal of 64000564 is 46500046.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23931664 + 40068900 = 4892^2 + 6330^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64000561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275749 + ... + 275980.

It is an arithmetic number, because the mean of its divisors is an integer number (9655275).

Almost surely, 2^64000564 is an apocalyptic number.

It is an amenable number.

64000564 is a deficient number, since it is larger than the sum of its proper divisors (51862736).

64000564 is a wasteful number, since it uses less digits than its factorization.

64000564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551762 (or 551760 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 64000564 is about 8000.0352499223. The cubic root of 64000564 is about 400.0011749965.

The spelling of 64000564 in words is "sixty-four million, five hundred sixty-four", and thus it is an aban number.