2568389 has 2 divisors, whose sum is σ = 2568390. Its totient is φ = 2568388.

The previous prime is 2568373. The next prime is 2568403. The reversal of 2568389 is 9838652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2505889 + 62500 = 1583^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2568389 - 2⁴ = 2568373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2568689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284194 + 1284195.

It is an arithmetic number, because the mean of its divisors is an integer number (1284195).

2^2568389 is an apocalyptic number.

It is an amenable number.

2568389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2568389 is an equidigital number, since it uses as much as digits as its factorization.

2568389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 2568389 is about 1602.6194183274. The cubic root of 2568389 is about 136.9473397695.

The spelling of 2568389 in words is "two million, five hundred sixty-eight thousand, three hundred eighty-nine".