259806 has 32 divisors (see below), whose sum is σ = 570240. Its totient is φ = 78624.

The previous prime is 259801. The next prime is 259813. The reversal of 259806 is 608952.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4876 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (17820).

2²⁵⁹⁸⁰⁶ is an apocalyptic number.

259806 is an abundant number, since it is smaller than the sum of its proper divisors (310434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259806 is a wasteful number, since it uses less digits than its factorization.

259806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 259806 is about 509.7116832092. The cubic root of 259806 is about 63.8091646049.

The spelling of 259806 in words is "two hundred fifty-nine thousand, eight hundred six".