268975257 has 4 divisors (see below), whose sum is σ = 358633680. Its totient is φ = 179316836.

The previous prime is 268975249. The next prime is 268975279. The reversal of 268975257 is 752579862.

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 268975257 - 2³ = 268975249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268975297) 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, 44829207 + ... + 44829212.

It is an arithmetic number, because the mean of its divisors is an integer number (89658420).

Almost surely, 2^268975257 is an apocalyptic number.

It is an amenable number.

268975257 is a deficient number, since it is larger than the sum of its proper divisors (89658423).

268975257 is an equidigital number, since it uses as much as digits as its factorization.

268975257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89658422.

The product of its digits is 2116800, while the sum is 51.

The square root of 268975257 is about 16400.4651458427. The cubic root of 268975257 is about 645.5116881878.

The spelling of 268975257 in words is "two hundred sixty-eight million, nine hundred seventy-five thousand, two hundred fifty-seven".