64064564 has 12 divisors (see below), whose sum is σ = 112239204. Its totient is φ = 31996224.

The previous prime is 64064563. The next prime is 64064573. The reversal of 64064564 is 46546046.

It can be written as a sum of positive squares in 2 ways, for example, as 16564900 + 47499664 = 4070^2 + 6892^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64064563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4799 + ... + 12294.

It is an arithmetic number, because the mean of its divisors is an integer number (9353267).

Almost surely, 2^64064564 is an apocalyptic number.

It is an amenable number.

64064564 is a deficient number, since it is larger than the sum of its proper divisors (48174640).

64064564 is a wasteful number, since it uses less digits than its factorization.

64064564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18034 (or 18032 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 64064564 is about 8004.0342328104. The cubic root of 64064564 is about 400.1344631274.

The spelling of 64064564 in words is "sixty-four million, sixty-four thousand, five hundred sixty-four".