268558 has 8 divisors (see below), whose sum is σ = 411552. Its totient is φ = 131376.

The previous prime is 268547. The next prime is 268573. The reversal of 268558 is 855862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹⁸ + 6² + 5⁵ + 8² + 5⁵ + 8² .

It is a congruent number.

It is an unprimeable number.

268558 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335 + ... + 1522.

It is an arithmetic number, because the mean of its divisors is an integer number (51444).

2²⁶⁸⁵⁵⁸ is an apocalyptic number.

268558 is a deficient number, since it is larger than the sum of its proper divisors (142994).

268558 is a wasteful number, since it uses less digits than its factorization.

268558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906.

The product of its digits is 19200, while the sum is 34.

The square root of 268558 is about 518.2258195034. The cubic root of 268558 is about 64.5177724796.

It can be divided in two parts, 26855 and 8, that multiplied together give a triangular number (214840 = T₆₅₅).

The spelling of 268558 in words is "two hundred sixty-eight thousand, five hundred fifty-eight".