566606591 has 2 divisors, whose sum is σ = 566606592. Its totient is φ = 566606590.

The previous prime is 566606569. The next prime is 566606597. The reversal of 566606591 is 195606665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 566606591 - 2⁶ = 566606527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566606597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283303295 + 283303296.

It is an arithmetic number, because the mean of its divisors is an integer number (283303296).

Almost surely, 2^566606591 is an apocalyptic number.

566606591 is a deficient number, since it is larger than the sum of its proper divisors (1).

566606591 is an equidigital number, since it uses as much as digits as its factorization.

566606591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 566606591 is about 23803.4995536371. The cubic root of 566606591 is about 827.4857825921.

The spelling of 566606591 in words is "five hundred sixty-six million, six hundred six thousand, five hundred ninety-one".