258965 has 16 divisors (see below), whose sum is σ = 364800. Its totient is φ = 176400.

The previous prime is 258959. The next prime is 258967. The reversal of 258965 is 569852.

It is not a de Polignac number, because 258965 - 2⁴ = 258949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon 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 258965.

It is not an unprimeable number, because it can be changed into a prime (258967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1640 + ... + 1790.

It is an arithmetic number, because the mean of its divisors is an integer number (22800).

2²⁵⁸⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

258965 is a deficient number, since it is larger than the sum of its proper divisors (105835).

258965 is an equidigital number, since it uses as much as digits as its factorization.

258965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 163 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 258965 is about 508.8860383229. The cubic root of 258965 is about 63.7402394386.

The spelling of 258965 in words is "two hundred fifty-eight thousand, nine hundred sixty-five".