268555 has 8 divisors (see below), whose sum is σ = 368352. Its totient is φ = 184128.

The previous prime is 268547. The next prime is 268573. The reversal of 268555 is 555862.

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

It is not a de Polignac number, because 268555 - 2³ = 268547 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 3802 + ... + 3871.

It is an arithmetic number, because the mean of its divisors is an integer number (46044).

2²⁶⁸⁵⁵⁵ is an apocalyptic number.

268555 is a deficient number, since it is larger than the sum of its proper divisors (99797).

268555 is an equidigital number, since it uses as much as digits as its factorization.

268555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7685.

The product of its digits is 12000, while the sum is 31.

The square root of 268555 is about 518.2229250043. Note that the first 3 decimals coincide. The cubic root of 268555 is about 64.5175322410.

The spelling of 268555 in words is "two hundred sixty-eight thousand, five hundred fifty-five".