268816297 has 2 divisors, whose sum is σ = 268816298. Its totient is φ = 268816296.

The previous prime is 268816277. The next prime is 268816307. The reversal of 268816297 is 792618862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222725776 + 46090521 = 14924^2 + 6789^2 .

It is a cyclic number.

It is not a de Polignac number, because 268816297 - 2⁷ = 268816169 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268816297.

It is not a weakly prime, because it can be changed into another prime (268816277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134408148 + 134408149.

It is an arithmetic number, because the mean of its divisors is an integer number (134408149).

Almost surely, 2^268816297 is an apocalyptic number.

It is an amenable number.

268816297 is a deficient number, since it is larger than the sum of its proper divisors (1).

268816297 is an equidigital number, since it uses as much as digits as its factorization.

268816297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 268816297 is about 16395.6182256114. The cubic root of 268816297 is about 645.3845008281.

The spelling of 268816297 in words is "two hundred sixty-eight million, eight hundred sixteen thousand, two hundred ninety-seven".