268649637 has 16 divisors (see below), whose sum is σ = 383879040. Its totient is φ = 166681152.

The previous prime is 268649581. The next prime is 268649639. The reversal of 268649637 is 736946862.

It is a happy number.

It is not a de Polignac number, because 268649637 - 2⁶ = 268649573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268649637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268649639) 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, 50062 + ... + 55167.

It is an arithmetic number, because the mean of its divisors is an integer number (23992440).

Almost surely, 2^268649637 is an apocalyptic number.

It is an amenable number.

268649637 is a deficient number, since it is larger than the sum of its proper divisors (115229403).

268649637 is a wasteful number, since it uses less digits than its factorization.

268649637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105292.

The product of its digits is 2612736, while the sum is 51.

The square root of 268649637 is about 16390.5349821170. The cubic root of 268649637 is about 645.2510986771.

The spelling of 268649637 in words is "two hundred sixty-eight million, six hundred forty-nine thousand, six hundred thirty-seven".