566246642669 has 2 divisors, whose sum is σ = 566246642670. Its totient is φ = 566246642668.

The previous prime is 566246642617. The next prime is 566246642747. The reversal of 566246642669 is 966246642665.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519487770025 + 46758872644 = 720755^2 + 216238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-566246642669 is a prime.

It is a super-2 number, since 2×566246642669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566246612669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283123321334 + 283123321335.

It is an arithmetic number, because the mean of its divisors is an integer number (283123321335).

Almost surely, 2^566246642669 is an apocalyptic number.

It is an amenable number.

566246642669 is a deficient number, since it is larger than the sum of its proper divisors (1).

566246642669 is an equidigital number, since it uses as much as digits as its factorization.

566246642669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134369280, while the sum is 62.

The spelling of 566246642669 in words is "five hundred sixty-six billion, two hundred forty-six million, six hundred forty-two thousand, six hundred sixty-nine".