258679 has 4 divisors (see below), whose sum is σ = 260680. Its totient is φ = 256680.

The previous prime is 258677. The next prime is 258691. The reversal of 258679 is 976852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 258679 - 2¹ = 258677 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 5⁷ + 6⁴ + 8³ + 7⁶ + 9⁵ .

It is a Duffinian number.

258679 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258673) by changing a digit.

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, 792 + ... + 1069.

It is an arithmetic number, because the mean of its divisors is an integer number (65170).

2²⁵⁸⁶⁷⁹ is an apocalyptic number.

258679 is a deficient number, since it is larger than the sum of its proper divisors (2001).

258679 is a wasteful number, since it uses less digits than its factorization.

258679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its digits is 30240, while the sum is 37.

The square root of 258679 is about 508.6049547537. The cubic root of 258679 is about 63.7167659660.

The spelling of 258679 in words is "two hundred fifty-eight thousand, six hundred seventy-nine".