258205868 has 6 divisors (see below), whose sum is σ = 451860276. Its totient is φ = 129102932.

The previous prime is 258205867. The next prime is 258205897. The reversal of 258205868 is 868502852.

It is not an unprimeable number, because it can be changed into a prime (258205867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32275730 + ... + 32275737.

It is an arithmetic number, because the mean of its divisors is an integer number (75310046).

Almost surely, 2^258205868 is an apocalyptic number.

It is an amenable number.

258205868 is a deficient number, since it is larger than the sum of its proper divisors (193654408).

258205868 is a wasteful number, since it uses less digits than its factorization.

258205868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64551471 (or 64551469 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The square root of 258205868 is about 16068.7855172692. The cubic root of 258205868 is about 636.7789560386.

The spelling of 258205868 in words is "two hundred fifty-eight million, two hundred five thousand, eight hundred sixty-eight".