258668 has 6 divisors (see below), whose sum is σ = 452676. Its totient is φ = 129332.

The previous prime is 258659. The next prime is 258673. The reversal of 258668 is 866852.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258668.

It is an unprimeable number.

258668 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32330 + ... + 32337.

It is an arithmetic number, because the mean of its divisors is an integer number (75446).

2²⁵⁸⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

258668 is a deficient number, since it is larger than the sum of its proper divisors (194008).

258668 is a wasteful number, since it uses less digits than its factorization.

258668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64671 (or 64669 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 258668 is about 508.5941407449. The cubic root of 258668 is about 63.7158627947.

The spelling of 258668 in words is "two hundred fifty-eight thousand, six hundred sixty-eight".