268557 has 4 divisors (see below), whose sum is σ = 358080. Its totient is φ = 179036.

The previous prime is 268547. The next prime is 268573. The reversal of 268557 is 755862.

It is a happy number.

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 not a de Polignac number, because 268557 - 2⁶ = 268493 is a prime.

It is a d-powerful number, because it can be written as 2¹⁰ + 6⁴ + 5⁴ + 8⁶ + 5⁵ + 7³ .

It is a D-number.

268557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268507) by changing a digit.

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, 44757 + ... + 44762.

It is an arithmetic number, because the mean of its divisors is an integer number (89520).

2²⁶⁸⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

268557 is a deficient number, since it is larger than the sum of its proper divisors (89523).

268557 is an equidigital number, since it uses as much as digits as its factorization.

268557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89522.

The product of its digits is 16800, while the sum is 33.

The square root of 268557 is about 518.2248546722. The cubic root of 268557 is about 64.5176924003.

It can be divided in two parts, 26855 and 7, that added together give a palindrome (26862).

The spelling of 268557 in words is "two hundred sixty-eight thousand, five hundred fifty-seven".