568669 has 2 divisors, whose sum is σ = 568670. Its totient is φ = 568668.

The previous prime is 568657. The next prime is 568679. The reversal of 568669 is 966865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 24025 = 738^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 568669 - 2⁷ = 568541 is a prime.

It is a super-2 number, since 2×568669² = 646768863122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (568609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284334 + 284335.

It is an arithmetic number, because the mean of its divisors is an integer number (284335).

2⁵⁶⁸⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

568669 is a deficient number, since it is larger than the sum of its proper divisors (1).

568669 is an equidigital number, since it uses as much as digits as its factorization.

568669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 568669 is about 754.1014520607. The cubic root of 568669 is about 82.8488563991.

The spelling of 568669 in words is "five hundred sixty-eight thousand, six hundred sixty-nine".