268856641 has 4 divisors (see below), whose sum is σ = 269631792. Its totient is φ = 268081492.

The previous prime is 268856611. The next prime is 268856657. The reversal of 268856641 is 146658862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 268856641 - 2²⁷ = 134638913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268856591 and 268856600.

It is not an unprimeable number, because it can be changed into a prime (268856611) 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, 387055 + ... + 387748.

It is an arithmetic number, because the mean of its divisors is an integer number (67407948).

Almost surely, 2^268856641 is an apocalyptic number.

It is an amenable number.

268856641 is a deficient number, since it is larger than the sum of its proper divisors (775151).

268856641 is an equidigital number, since it uses as much as digits as its factorization.

268856641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775150.

The product of its digits is 552960, while the sum is 46.

The square root of 268856641 is about 16396.8485081738. The cubic root of 268856641 is about 645.4167856885.

The spelling of 268856641 in words is "two hundred sixty-eight million, eight hundred fifty-six thousand, six hundred forty-one".