64504564 has 6 divisors (see below), whose sum is σ = 112882994. Its totient is φ = 32252280.

The previous prime is 64504541. The next prime is 64504571. The reversal of 64504564 is 46540546.

64504564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47032164 + 17472400 = 6858^2 + 4180^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8063067 + ... + 8063074.

Almost surely, 2^64504564 is an apocalyptic number.

It is an amenable number.

64504564 is a deficient number, since it is larger than the sum of its proper divisors (48378430).

64504564 is a wasteful number, since it uses less digits than its factorization.

64504564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16126145 (or 16126143 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 64504564 is about 8031.4733393071. The cubic root of 64504564 is about 401.0484246137.

The spelling of 64504564 in words is "sixty-four million, five hundred four thousand, five hundred sixty-four".