268597409 has 2 divisors, whose sum is σ = 268597410. Its totient is φ = 268597408.

The previous prime is 268597397. The next prime is 268597421. The reversal of 268597409 is 904795862.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (268597397) and next prime (268597421).

It can be written as a sum of positive squares in only one way, i.e., 268042384 + 555025 = 16372^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 268597409 - 2²⁰ = 267548833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268597489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134298704 + 134298705.

It is an arithmetic number, because the mean of its divisors is an integer number (134298705).

Almost surely, 2^268597409 is an apocalyptic number.

It is an amenable number.

268597409 is a deficient number, since it is larger than the sum of its proper divisors (1).

268597409 is an equidigital number, since it uses as much as digits as its factorization.

268597409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 268597409 is about 16388.9416680883. The cubic root of 268597409 is about 645.2092816859.

The spelling of 268597409 in words is "two hundred sixty-eight million, five hundred ninety-seven thousand, four hundred nine".