259897 has 4 divisors (see below), whose sum is σ = 283536. Its totient is φ = 236260.

The previous prime is 259867. The next prime is 259907. The reversal of 259897 is 798952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (259837) 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 3 ways as a sum of consecutive naturals, for example, 11803 + ... + 11824.

It is an arithmetic number, because the mean of its divisors is an integer number (70884).

2²⁵⁹⁸⁹⁷ is an apocalyptic number.

259897 is the 273-rd centered heptagonal number.

It is an amenable number.

259897 is a deficient number, since it is larger than the sum of its proper divisors (23639).

259897 is a wasteful number, since it uses less digits than its factorization.

259897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23638.

The product of its digits is 45360, while the sum is 40.

The square root of 259897 is about 509.8009415448. The cubic root of 259897 is about 63.8166136966.

It can be divided in two parts, 259 and 897, that added together give a square (1156 = 34²).

The spelling of 259897 in words is "two hundred fifty-nine thousand, eight hundred ninety-seven".