258678 has 24 divisors (see below), whose sum is σ = 640848. Its totient is φ = 73872.

The previous prime is 258677. The next prime is 258691. The reversal of 258678 is 876852.

258678 is a `hidden beast` number, since 2 + 586 + 78 = 666.

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 258678.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 901 + ... + 1152.

It is an arithmetic number, because the mean of its divisors is an integer number (26702).

2²⁵⁸⁶⁷⁸ is an apocalyptic number.

258678 is an abundant number, since it is smaller than the sum of its proper divisors (382170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258678 is a wasteful number, since it uses less digits than its factorization.

258678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2065 counting only the distinct ones).

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

The square root of 258678 is about 508.6039716715. The cubic root of 258678 is about 63.7166838606.

The spelling of 258678 in words is "two hundred fifty-eight thousand, six hundred seventy-eight".