258683985 has 144 divisors (see below), whose sum is σ = 565958016. Its totient is φ = 108573696.

The previous prime is 258683947. The next prime is 258684017. The reversal of 258683985 is 589386852.

It is not a de Polignac number, because 258683985 - 2¹⁸ = 258421841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2511444 + ... + 2511546.

It is an arithmetic number, because the mean of its divisors is an integer number (3930264).

Almost surely, 2^258683985 is an apocalyptic number.

It is an amenable number.

258683985 is an abundant number, since it is smaller than the sum of its proper divisors (307274031).

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

258683985 is a wasteful number, since it uses less digits than its factorization.

258683985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 202 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The square root of 258683985 is about 16083.6558344177. The cubic root of 258683985 is about 637.1717525837.

The spelling of 258683985 in words is "two hundred fifty-eight million, six hundred eighty-three thousand, nine hundred eighty-five".