268554681 has 24 divisors (see below), whose sum is σ = 393821376. Its totient is φ = 176329440.

The previous prime is 268554677. The next prime is 268554691. The reversal of 268554681 is 186455862.

268554681 is a `hidden beast` number, since 26 + 8 + 5 + 546 + 81 = 666.

It is not a de Polignac number, because 268554681 - 2² = 268554677 is a prime.

It is a super-2 number, since 2×268554681² = 144243233374023522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268554631) 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 23 ways as a sum of consecutive naturals, for example, 194911 + ... + 196283.

It is an arithmetic number, because the mean of its divisors is an integer number (16409224).

Almost surely, 2^268554681 is an apocalyptic number.

It is an amenable number.

268554681 is a deficient number, since it is larger than the sum of its proper divisors (125266695).

268554681 is a wasteful number, since it uses less digits than its factorization.

268554681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1690 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 268554681 is about 16387.6380543384. The cubic root of 268554681 is about 645.1750669550.

The spelling of 268554681 in words is "two hundred sixty-eight million, five hundred fifty-four thousand, six hundred eighty-one".