268964891 has 8 divisors (see below), whose sum is σ = 289947840. Its totient is φ = 248023872.

The previous prime is 268964887. The next prime is 268964947. The reversal of 268964891 is 198469862.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268964891 - 2² = 268964887 is a prime.

It is a super-2 number, since 2×268964891² = 144684225181283762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268964831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3551 + ... + 23463.

It is an arithmetic number, because the mean of its divisors is an integer number (36243480).

Almost surely, 2^268964891 is an apocalyptic number.

268964891 is a deficient number, since it is larger than the sum of its proper divisors (20982949).

268964891 is a wasteful number, since it uses less digits than its factorization.

268964891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20965.

The product of its digits is 1492992, while the sum is 53.

The square root of 268964891 is about 16400.1491151758. The cubic root of 268964891 is about 645.5033956529.

The spelling of 268964891 in words is "two hundred sixty-eight million, nine hundred sixty-four thousand, eight hundred ninety-one".