64522566 has 24 divisors (see below), whose sum is σ = 140509200. Its totient is φ = 21398256.

The previous prime is 64522559. The next prime is 64522589. The reversal of 64522566 is 66522546.

64522566 is a `hidden beast` number, since 645 + 2 + 2 + 5 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 64522566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5425 + ... + 12588.

It is an arithmetic number, because the mean of its divisors is an integer number (5854550).

Almost surely, 2^64522566 is an apocalyptic number.

64522566 is an abundant number, since it is smaller than the sum of its proper divisors (75986634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64522566 is a wasteful number, since it uses less digits than its factorization.

64522566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18220 (or 18217 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 64522566 is about 8032.5939770413. The cubic root of 64522566 is about 401.0857294790.

The spelling of 64522566 in words is "sixty-four million, five hundred twenty-two thousand, five hundred sixty-six".