566287561 has 24 divisors (see below), whose sum is σ = 699260040. Its totient is φ = 455680512.

The previous prime is 566287543. The next prime is 566287573. The reversal of 566287561 is 165782665.

It can be written as a sum of positive squares in 4 ways, for example, as 13097161 + 553190400 = 3619^2 + 23520^2 .

It is not a de Polignac number, because 566287561 - 2⁷ = 566287433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566287661) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 510075 + ... + 511183.

It is an arithmetic number, because the mean of its divisors is an integer number (29135835).

Almost surely, 2^566287561 is an apocalyptic number.

It is an amenable number.

566287561 is a deficient number, since it is larger than the sum of its proper divisors (132972479).

566287561 is a wasteful number, since it uses less digits than its factorization.

566287561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753 (or 1746 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 566287561 is about 23796.7972845087. The cubic root of 566287561 is about 827.3304470934.

The spelling of 566287561 in words is "five hundred sixty-six million, two hundred eighty-seven thousand, five hundred sixty-one".