566639 has 2 divisors, whose sum is σ = 566640. Its totient is φ = 566638.

The previous prime is 566633. The next prime is 566653. The reversal of 566639 is 936665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 566639 - 2¹⁶ = 501103 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 566599 and 566608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566633) 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, 283319 + 283320.

It is an arithmetic number, because the mean of its divisors is an integer number (283320).

2⁵⁶⁶⁶³⁹ is an apocalyptic number.

566639 is a deficient number, since it is larger than the sum of its proper divisors (1).

566639 is an equidigital number, since it uses as much as digits as its factorization.

566639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 35.

The square root of 566639 is about 752.7542759759. The cubic root of 566639 is about 82.7501559250.

The spelling of 566639 in words is "five hundred sixty-six thousand, six hundred thirty-nine".