259863 has 16 divisors (see below), whose sum is σ = 376320. Its totient is φ = 158976.

The previous prime is 259841. The next prime is 259867. The reversal of 259863 is 368952.

It is a happy number.

It is not a de Polignac number, because 259863 - 2¹² = 255767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259867) 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 in 15 ways as a sum of consecutive naturals, for example, 2631 + ... + 2727.

It is an arithmetic number, because the mean of its divisors is an integer number (23520).

2²⁵⁹⁸⁶³ is an apocalyptic number.

259863 is a deficient number, since it is larger than the sum of its proper divisors (116457).

259863 is a wasteful number, since it uses less digits than its factorization.

259863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

The product of its digits is 12960, while the sum is 33.

The square root of 259863 is about 509.7675941054. The cubic root of 259863 is about 63.8138307230.

The spelling of 259863 in words is "two hundred fifty-nine thousand, eight hundred sixty-three".