566345565 has 24 divisors (see below), whose sum is σ = 1039412088. Its totient is φ = 284282880.

The previous prime is 566345513. The next prime is 566345581. The reversal of 566345565 is 565543665.

566345565 is a `hidden beast` number, since 5 + 6 + 634 + 5 + 5 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 58339044 + 508006521 = 7638^2 + 22539^2 .

It is not a de Polignac number, because 566345565 - 2⁹ = 566345053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 566345565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369396 + ... + 370925.

It is an arithmetic number, because the mean of its divisors is an integer number (43308837).

Almost surely, 2^566345565 is an apocalyptic number.

It is an amenable number.

566345565 is a deficient number, since it is larger than the sum of its proper divisors (473066523).

566345565 is a wasteful number, since it uses less digits than its factorization.

566345565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740349 (or 740346 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 45.

The square root of 566345565 is about 23798.0159887332. The cubic root of 566345565 is about 827.3586935417.

The spelling of 566345565 in words is "five hundred sixty-six million, three hundred forty-five thousand, five hundred sixty-five".