258906 has 8 divisors (see below), whose sum is σ = 517824. Its totient is φ = 86300.

The previous prime is 258887. The next prime is 258917. The reversal of 258906 is 609852.

It is a sphenic number, since it is the product of 3 distinct primes.

258906 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258906.

It is an unprimeable number.

258906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21570 + ... + 21581.

It is an arithmetic number, because the mean of its divisors is an integer number (64728).

2²⁵⁸⁹⁰⁶ is an apocalyptic number.

258906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258906 is a wasteful number, since it uses less digits than its factorization.

258906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43156.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 258906 is about 508.8280652637. The cubic root of 258906 is about 63.7353984244.

The spelling of 258906 in words is "two hundred fifty-eight thousand, nine hundred six".