268588891 has 2 divisors, whose sum is σ = 268588892. Its totient is φ = 268588890.

The previous prime is 268588889. The next prime is 268588927. The reversal of 268588891 is 198885862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268588891 - 2¹ = 268588889 is a prime.

Together with 268588889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (268588841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134294445 + 134294446.

It is an arithmetic number, because the mean of its divisors is an integer number (134294446).

Almost surely, 2^268588891 is an apocalyptic number.

268588891 is a deficient number, since it is larger than the sum of its proper divisors (1).

268588891 is an equidigital number, since it uses as much as digits as its factorization.

268588891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2211840, while the sum is 55.

The square root of 268588891 is about 16388.6817956784. The cubic root of 268588891 is about 645.2024611302.

The spelling of 268588891 in words is "two hundred sixty-eight million, five hundred eighty-eight thousand, eight hundred ninety-one".