258647 has 4 divisors (see below), whose sum is σ = 272280. Its totient is φ = 245016.

The previous prime is 258637. The next prime is 258659. The reversal of 258647 is 746852.

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 258647 - 2⁴ = 258631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258647.

It is not an unprimeable number, because it can be changed into a prime (258607) 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, 6788 + ... + 6825.

It is an arithmetic number, because the mean of its divisors is an integer number (68070).

2²⁵⁸⁶⁴⁷ is an apocalyptic number.

258647 is a deficient number, since it is larger than the sum of its proper divisors (13633).

258647 is a wasteful number, since it uses less digits than its factorization.

258647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13632.

The product of its digits is 13440, while the sum is 32.

The square root of 258647 is about 508.5734951804. The cubic root of 258647 is about 63.7141384874.

The spelling of 258647 in words is "two hundred fifty-eight thousand, six hundred forty-seven".