258366881 has 4 divisors (see below), whose sum is σ = 258759600. Its totient is φ = 257974164.

The previous prime is 258366863. The next prime is 258366907. The reversal of 258366881 is 188663852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258366881 - 2²⁶ = 191258017 is a prime.

It is a super-2 number, since 2×258366881² = 133506890395336322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258366851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195371 + ... + 196688.

It is an arithmetic number, because the mean of its divisors is an integer number (64689900).

Almost surely, 2^258366881 is an apocalyptic number.

It is an amenable number.

258366881 is a deficient number, since it is larger than the sum of its proper divisors (392719).

258366881 is an equidigital number, since it uses as much as digits as its factorization.

258366881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392718.

The product of its digits is 552960, while the sum is 47.

The square root of 258366881 is about 16073.7948537363. The cubic root of 258366881 is about 636.9112902187.

The spelling of 258366881 in words is "two hundred fifty-eight million, three hundred sixty-six thousand, eight hundred eighty-one".