268506 has 24 divisors (see below), whose sum is σ = 665184. Its totient is φ = 76680.

The previous prime is 268501. The next prime is 268507. The reversal of 268506 is 605862.

It is a self number, because there is not a number n which added to its sum of digits gives 268506.

It is not an unprimeable number, because it can be changed into a prime (268501) by changing a digit.

268506 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 940 + ... + 1191.

It is an arithmetic number, because the mean of its divisors is an integer number (27716).

2²⁶⁸⁵⁰⁶ is an apocalyptic number.

268506 is an abundant number, since it is smaller than the sum of its proper divisors (396678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268506 is a wasteful number, since it uses less digits than its factorization.

268506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 268506 is about 518.1756458963. The cubic root of 268506 is about 64.5136080897.

The spelling of 268506 in words is "two hundred sixty-eight thousand, five hundred six".