268266589 has 2 divisors, whose sum is σ = 268266590. Its totient is φ = 268266588.

The previous prime is 268266533. The next prime is 268266599. The reversal of 268266589 is 985662862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248535225 + 19731364 = 15765^2 + 4442^2 .

It is a cyclic number.

It is not a de Polignac number, because 268266589 - 2⁹ = 268266077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268266599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134133294 + 134133295.

It is an arithmetic number, because the mean of its divisors is an integer number (134133295).

Almost surely, 2^268266589 is an apocalyptic number.

It is an amenable number.

268266589 is a deficient number, since it is larger than the sum of its proper divisors (1).

268266589 is an equidigital number, since it uses as much as digits as its factorization.

268266589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 52.

The square root of 268266589 is about 16378.8457774045. The cubic root of 268266589 is about 644.9442805862.

The spelling of 268266589 in words is "two hundred sixty-eight million, two hundred sixty-six thousand, five hundred eighty-nine".