268559 has 4 divisors (see below), whose sum is σ = 271320. Its totient is φ = 265800.

The previous prime is 268547. The next prime is 268573. The reversal of 268559 is 955862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268559 - 2¹² = 264463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229 + ... + 1430.

It is an arithmetic number, because the mean of its divisors is an integer number (67830).

268559 is a Friedman number, since it can be written as 8*(5*2)^5-9^6, using all its digits and the basic arithmetic operations.

2²⁶⁸⁵⁵⁹ is an apocalyptic number.

268559 is a deficient number, since it is larger than the sum of its proper divisors (2761).

268559 is a wasteful number, since it uses less digits than its factorization.

268559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760.

The product of its digits is 21600, while the sum is 35.

The square root of 268559 is about 518.2267843329. The cubic root of 268559 is about 64.5178525588.

It can be divided in two parts, 2685 and 59, that added together give a cube (2744 = 14³).

The spelling of 268559 in words is "two hundred sixty-eight thousand, five hundred fifty-nine".