268488397 has 2 divisors, whose sum is σ = 268488398. Its totient is φ = 268488396.

The previous prime is 268488343. The next prime is 268488413. The reversal of 268488397 is 793884862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151437636 + 117050761 = 12306^2 + 10819^2 .

It is a cyclic number.

It is not a de Polignac number, because 268488397 - 2¹¹ = 268486349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268488097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134244198 + 134244199.

It is an arithmetic number, because the mean of its divisors is an integer number (134244199).

Almost surely, 2^268488397 is an apocalyptic number.

It is an amenable number.

268488397 is a deficient number, since it is larger than the sum of its proper divisors (1).

268488397 is an equidigital number, since it uses as much as digits as its factorization.

268488397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 55.

The square root of 268488397 is about 16385.6155514524. The cubic root of 268488397 is about 645.1219824177.

It can be divided in two parts, 26848 and 8397, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 268488397 in words is "two hundred sixty-eight million, four hundred eighty-eight thousand, three hundred ninety-seven".