268857307 has 2 divisors, whose sum is σ = 268857308. Its totient is φ = 268857306.

The previous prime is 268857283. The next prime is 268857313. The reversal of 268857307 is 703758862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268857307 - 2⁷ = 268857179 is a prime.

It is not a weakly prime, because it can be changed into another prime (268857367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134428653 + 134428654.

It is an arithmetic number, because the mean of its divisors is an integer number (134428654).

Almost surely, 2^268857307 is an apocalyptic number.

268857307 is a deficient number, since it is larger than the sum of its proper divisors (1).

268857307 is an equidigital number, since it uses as much as digits as its factorization.

268857307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 268857307 is about 16396.8688169418. The cubic root of 268857307 is about 645.4173186209.

It can be divided in two parts, 2688 and 57307, that added together give a palindrome (59995).

The spelling of 268857307 in words is "two hundred sixty-eight million, eight hundred fifty-seven thousand, three hundred seven".