258798 has 8 divisors (see below), whose sum is σ = 517608. Its totient is φ = 86264.

The previous prime is 258787. The next prime is 258803. The reversal of 258798 is 897852.

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

258798 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

258798 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21561 + ... + 21572.

It is an arithmetic number, because the mean of its divisors is an integer number (64701).

2²⁵⁸⁷⁹⁸ is an apocalyptic number.

258798 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.

258798 is a wasteful number, since it uses less digits than its factorization.

258798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43138.

The product of its digits is 40320, while the sum is 39.

The square root of 258798 is about 508.7219279724. The cubic root of 258798 is about 63.7265350012.

The spelling of 258798 in words is "two hundred fifty-eight thousand, seven hundred ninety-eight".