566315665 has 4 divisors (see below), whose sum is σ = 679578804. Its totient is φ = 453052528.

The previous prime is 566315663. The next prime is 566315681. The reversal of 566315665 is 566513665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566513665 = 5 ⋅113302733.

It can be written as a sum of positive squares in 2 ways, for example, as 198021184 + 368294481 = 14072^2 + 19191^2 .

It is a cyclic number.

It is not a de Polignac number, because 566315665 - 2¹ = 566315663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566315663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56631562 + ... + 56631571.

It is an arithmetic number, because the mean of its divisors is an integer number (169894701).

Almost surely, 2^566315665 is an apocalyptic number.

It is an amenable number.

566315665 is a deficient number, since it is larger than the sum of its proper divisors (113263139).

566315665 is a wasteful number, since it uses less digits than its factorization.

566315665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113263138.

The product of its digits is 486000, while the sum is 43.

The square root of 566315665 is about 23797.3877768128. The cubic root of 566315665 is about 827.3441332556.

The spelling of 566315665 in words is "five hundred sixty-six million, three hundred fifteen thousand, six hundred sixty-five".