268649475 has 24 divisors (see below), whose sum is σ = 459486960. Its totient is φ = 138337920.

The previous prime is 268649471. The next prime is 268649519. The reversal of 268649475 is 574946862.

It is not a de Polignac number, because 268649475 - 2² = 268649471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268649471) 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 in 23 ways as a sum of consecutive naturals, for example, 59584 + ... + 63933.

It is an arithmetic number, because the mean of its divisors is an integer number (19145290).

Almost surely, 2^268649475 is an apocalyptic number.

268649475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

268649475 is a deficient number, since it is larger than the sum of its proper divisors (190837485).

268649475 is a wasteful number, since it uses less digits than its factorization.

268649475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123559 (or 123554 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The square root of 268649475 is about 16390.5300402397. The cubic root of 268649475 is about 645.2509689781.

The spelling of 268649475 in words is "two hundred sixty-eight million, six hundred forty-nine thousand, four hundred seventy-five".