258568393 has 2 divisors, whose sum is σ = 258568394. Its totient is φ = 258568392.

The previous prime is 258568391. The next prime is 258568421. The reversal of 258568393 is 393865852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258148489 + 419904 = 16067^2 + 648^2 .

It is a cyclic number.

It is not a de Polignac number, because 258568393 - 2¹ = 258568391 is a prime.

It is a super-2 number, since 2×258568393² = 133715227717204898, which contains 22 as substring.

Together with 258568391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (258568391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129284196 + 129284197.

It is an arithmetic number, because the mean of its divisors is an integer number (129284197).

Almost surely, 2^258568393 is an apocalyptic number.

It is an amenable number.

258568393 is a deficient number, since it is larger than the sum of its proper divisors (1).

258568393 is an equidigital number, since it uses as much as digits as its factorization.

258568393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 49.

The square root of 258568393 is about 16080.0619712736. The cubic root of 258568393 is about 637.0768324823.

The spelling of 258568393 in words is "two hundred fifty-eight million, five hundred sixty-eight thousand, three hundred ninety-three".