268274257 has 2 divisors, whose sum is σ = 268274258. Its totient is φ = 268274256.

The previous prime is 268274249. The next prime is 268274269. The reversal of 268274257 is 752472862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261113281 + 7160976 = 16159^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 268274257 - 2³ = 268274249 is a prime.

It is not a weakly prime, because it can be changed into another prime (268274057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134137128 + 134137129.

It is an arithmetic number, because the mean of its divisors is an integer number (134137129).

Almost surely, 2^268274257 is an apocalyptic number.

It is an amenable number.

268274257 is a deficient number, since it is larger than the sum of its proper divisors (1).

268274257 is an equidigital number, since it uses as much as digits as its factorization.

268274257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 43.

The square root of 268274257 is about 16379.0798581605. The cubic root of 268274257 is about 644.9504254509.

The spelling of 268274257 in words is "two hundred sixty-eight million, two hundred seventy-four thousand, two hundred fifty-seven".