566906689 has 2 divisors, whose sum is σ = 566906690. Its totient is φ = 566906688.

The previous prime is 566906687. The next prime is 566906719. The reversal of 566906689 is 986609665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528218289 + 38688400 = 22983^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 566906689 - 2¹ = 566906687 is a prime.

Together with 566906687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (566906687) 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 as a sum of consecutive naturals, namely, 283453344 + 283453345.

It is an arithmetic number, because the mean of its divisors is an integer number (283453345).

Almost surely, 2^566906689 is an apocalyptic number.

It is an amenable number.

566906689 is a deficient number, since it is larger than the sum of its proper divisors (1).

566906689 is an equidigital number, since it uses as much as digits as its factorization.

566906689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The square root of 566906689 is about 23809.8023721324. The cubic root of 566906689 is about 827.6318469007.

The spelling of 566906689 in words is "five hundred sixty-six million, nine hundred six thousand, six hundred eighty-nine".