268636947 has 16 divisors (see below), whose sum is σ = 371083680. Its totient is φ = 172659200.

The previous prime is 268636943. The next prime is 268636957. The reversal of 268636947 is 749636862.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 268636947 - 2² = 268636943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268636947.

It is not an unprimeable number, because it can be changed into a prime (268636943) 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, 69547 + ... + 73307.

It is an arithmetic number, because the mean of its divisors is an integer number (23192730).

Almost surely, 2^268636947 is an apocalyptic number.

268636947 is a deficient number, since it is larger than the sum of its proper divisors (102446733).

268636947 is a wasteful number, since it uses less digits than its factorization.

268636947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614.

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

The square root of 268636947 is about 16390.1478638846. The cubic root of 268636947 is about 645.2409387708.

The spelling of 268636947 in words is "two hundred sixty-eight million, six hundred thirty-six thousand, nine hundred forty-seven".