268965639 has 6 divisors (see below), whose sum is σ = 388505936. Its totient is φ = 179310420.

The previous prime is 268965637. The next prime is 268965659. The reversal of 268965639 is 936569862.

It is not a de Polignac number, because 268965639 - 2¹ = 268965637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268965637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14942527 + ... + 14942544.

Almost surely, 2^268965639 is an apocalyptic number.

268965639 is a deficient number, since it is larger than the sum of its proper divisors (119540297).

268965639 is a wasteful number, since it uses less digits than its factorization.

268965639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29885077 (or 29885074 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 268965639 is about 16400.1719198306. The cubic root of 268965639 is about 645.5039940409.

The spelling of 268965639 in words is "two hundred sixty-eight million, nine hundred sixty-five thousand, six hundred thirty-nine".