268091 has 2 divisors, whose sum is σ = 268092. Its totient is φ = 268090.

The previous prime is 268069. The next prime is 268123. The reversal of 268091 is 190862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268091 - 2¹⁴ = 251707 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268091.

It is not a weakly prime, because it can be changed into another prime (268291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134045 + 134046.

It is an arithmetic number, because the mean of its divisors is an integer number (134046).

2²⁶⁸⁰⁹¹ is an apocalyptic number.

268091 is a deficient number, since it is larger than the sum of its proper divisors (1).

268091 is an equidigital number, since it uses as much as digits as its factorization.

268091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 268091 is about 517.7750476800. The cubic root of 268091 is about 64.4803537705.

The spelling of 268091 in words is "two hundred sixty-eight thousand, ninety-one".