566390369 has 2 divisors, whose sum is σ = 566390370. Its totient is φ = 566390368.

The previous prime is 566390327. The next prime is 566390371. The reversal of 566390369 is 963093665.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 562638400 + 3751969 = 23720^2 + 1937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-566390369 is a prime.

It is a super-2 number, since 2×566390369² = 641596100191912322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 566390371, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_29659277 and since 566390369 and 29659277 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (566390569) 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, 283195184 + 283195185.

It is an arithmetic number, because the mean of its divisors is an integer number (283195185).

Almost surely, 2^566390369 is an apocalyptic number.

It is an amenable number.

566390369 is a deficient number, since it is larger than the sum of its proper divisors (1).

566390369 is an equidigital number, since it uses as much as digits as its factorization.

566390369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787320, while the sum is 47.

The square root of 566390369 is about 23798.9573090923. The cubic root of 566390369 is about 827.3805106110.

The spelling of 566390369 in words is "five hundred sixty-six million, three hundred ninety thousand, three hundred sixty-nine".