563999 has 2 divisors, whose sum is σ = 564000. Its totient is φ = 563998.

The previous prime is 563987. The next prime is 564013. The reversal of 563999 is 999365.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 563999 - 2⁸ = 563743 is a prime.

It is a Chen prime.

It is an Ulam number.

563999 is a modest number, since divided by 999 gives 563 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563929) 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, 281999 + 282000.

It is an arithmetic number, because the mean of its divisors is an integer number (282000).

2⁵⁶³⁹⁹⁹ is an apocalyptic number.

563999 is a deficient number, since it is larger than the sum of its proper divisors (1).

563999 is an equidigital number, since it uses as much as digits as its factorization.

563999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65610, while the sum is 41.

The square root of 563999 is about 750.9986684409. The cubic root of 563999 is about 82.6214434260.

The spelling of 563999 in words is "five hundred sixty-three thousand, nine hundred ninety-nine".