268642 has 8 divisors (see below), whose sum is σ = 439632. Its totient is φ = 122100.

The previous prime is 268637. The next prime is 268643. The reversal of 268642 is 246862.

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

It is a self number, because there is not a number n which added to its sum of digits gives 268642.

It is not an unprimeable number, because it can be changed into a prime (268643) by changing a digit.

268642 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, 6084 + ... + 6127.

It is an arithmetic number, because the mean of its divisors is an integer number (54954).

2²⁶⁸⁶⁴² is an apocalyptic number.

268642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

268642 is a deficient number, since it is larger than the sum of its proper divisors (170990).

268642 is a wasteful number, since it uses less digits than its factorization.

268642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12224.

The product of its digits is 4608, while the sum is 28.

The square root of 268642 is about 518.3068589166. The cubic root of 268642 is about 64.5244984357.

It can be divided in two parts, 26 and 8642, that added together give a palindrome (8668).

The spelling of 268642 in words is "two hundred sixty-eight thousand, six hundred forty-two".