564540066 has 24 divisors (see below), whose sum is σ = 1223614080. Its totient is φ = 188111736.

The previous prime is 564540059. The next prime is 564540073. The reversal of 564540066 is 660045465.

It is a happy number.

564540066 is a `hidden beast` number, since 5 + 645 + 4 + 0 + 0 + 6 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (564540059) and next prime (564540073).

It is a super-2 number, since 2×564540066² = 637410972238568712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 564540066.

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, 80871 + ... + 87573.

It is an arithmetic number, because the mean of its divisors is an integer number (50983920).

Almost surely, 2^564540066 is an apocalyptic number.

564540066 is an abundant number, since it is smaller than the sum of its proper divisors (659074014).

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

564540066 is a wasteful number, since it uses less digits than its factorization.

564540066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11390 (or 11387 counting only the distinct ones).

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

The square root of 564540066 is about 23760.0518938827. The cubic root of 564540066 is about 826.4785562776.

The spelling of 564540066 in words is "five hundred sixty-four million, five hundred forty thousand, sixty-six".