268811 has 2 divisors, whose sum is σ = 268812. Its totient is φ = 268810.

The previous prime is 268789. The next prime is 268813. The reversal of 268811 is 118862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268811 - 2⁶ = 268747 is a prime.

Together with 268813, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 268811.

It is not a weakly prime, because it can be changed into another prime (268813) 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 as a sum of consecutive naturals, namely, 134405 + 134406.

It is an arithmetic number, because the mean of its divisors is an integer number (134406).

2²⁶⁸⁸¹¹ is an apocalyptic number.

268811 is a deficient number, since it is larger than the sum of its proper divisors (1).

268811 is an equidigital number, since it uses as much as digits as its factorization.

268811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 26.

The square root of 268811 is about 518.4698641194. The cubic root of 268811 is about 64.5380261720.

The spelling of 268811 in words is "two hundred sixty-eight thousand, eight hundred eleven".