566969138 has 18 divisors (see below), whose sum is σ = 863843799. Its totient is φ = 279090112.

The previous prime is 566969107. The next prime is 566969141. The reversal of 566969138 is 831969665.

It can be written as a sum of positive squares in 5 ways, for example, as 50452609 + 516516529 = 7103^2 + 22727^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16837.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 566969138.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 3805088 + ... + 3805236.

Almost surely, 2^566969138 is an apocalyptic number.

566969138 is a deficient number, since it is larger than the sum of its proper divisors (296874661).

566969138 is an equidigital number, since it uses as much as digits as its factorization.

566969138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 264 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 53.

The square root of 566969138 is about 23811.1137496758. The cubic root of 566969138 is about 827.6622357251.

The spelling of 566969138 in words is "five hundred sixty-six million, nine hundred sixty-nine thousand, one hundred thirty-eight".