268816457 has 16 divisors (see below), whose sum is σ = 342263040. Its totient is φ = 205353792.

The previous prime is 268816417. The next prime is 268816481. The reversal of 268816457 is 754618862.

It is not a de Polignac number, because 268816457 - 2²⁰ = 267767881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268816417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48293 + ... + 53570.

It is an arithmetic number, because the mean of its divisors is an integer number (21391440).

Almost surely, 2^268816457 is an apocalyptic number.

It is an amenable number.

268816457 is a deficient number, since it is larger than the sum of its proper divisors (73446583).

268816457 is a wasteful number, since it uses less digits than its factorization.

268816457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101912.

The product of its digits is 645120, while the sum is 47.

The square root of 268816457 is about 16395.6231049631. The cubic root of 268816457 is about 645.3846288728.

The spelling of 268816457 in words is "two hundred sixty-eight million, eight hundred sixteen thousand, four hundred fifty-seven".