268915879 has 4 divisors (see below), whose sum is σ = 269492184. Its totient is φ = 268339576.

The previous prime is 268915859. The next prime is 268915891. The reversal of 268915879 is 978519862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268915879 - 2⁵ = 268915847 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 (268915819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287452 + ... + 288385.

It is an arithmetic number, because the mean of its divisors is an integer number (67373046).

Almost surely, 2^268915879 is an apocalyptic number.

268915879 is a deficient number, since it is larger than the sum of its proper divisors (576305).

268915879 is an equidigital number, since it uses as much as digits as its factorization.

268915879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576304.

The product of its digits is 2177280, while the sum is 55.

The square root of 268915879 is about 16398.6547923907. The cubic root of 268915879 is about 645.4641844208.

The spelling of 268915879 in words is "two hundred sixty-eight million, nine hundred fifteen thousand, eight hundred seventy-nine".