258687 has 32 divisors (see below), whose sum is σ = 456960. Its totient is φ = 142560.

The previous prime is 258677. The next prime is 258691. The reversal of 258687 is 786852.

258687 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 258687 - 2⁶ = 258623 is a prime.

It is a zygodrome in base 8.

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 258687.

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 31 ways as a sum of consecutive naturals, for example, 3828 + ... + 3894.

It is an arithmetic number, because the mean of its divisors is an integer number (14280).

2²⁵⁸⁶⁸⁷ is an apocalyptic number.

258687 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

258687 is a deficient number, since it is larger than the sum of its proper divisors (198273).

258687 is a wasteful number, since it uses less digits than its factorization.

258687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 94 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 258687 is about 508.6128193430. The cubic root of 258687 is about 63.7174228018.

The spelling of 258687 in words is "two hundred fifty-eight thousand, six hundred eighty-seven".