268785881 has 12 divisors (see below), whose sum is σ = 332632512. Its totient is φ = 212664816.

The previous prime is 268785877. The next prime is 268785883. The reversal of 268785881 is 188587862.

It is not a de Polignac number, because 268785881 - 2² = 268785877 is a prime.

It is a super-2 number, since 2×268785881² = 144491699649892322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268785883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112421 + ... + 114786.

It is an arithmetic number, because the mean of its divisors is an integer number (27719376).

Almost surely, 2^268785881 is an apocalyptic number.

It is an amenable number.

268785881 is a deficient number, since it is larger than the sum of its proper divisors (63846631).

268785881 is a wasteful number, since it uses less digits than its factorization.

268785881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227240 (or 227227 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 53.

The square root of 268785881 is about 16394.6906344707. The cubic root of 268785881 is about 645.3601586093.

The spelling of 268785881 in words is "two hundred sixty-eight million, seven hundred eighty-five thousand, eight hundred eighty-one".