258116660 has 24 divisors (see below), whose sum is σ = 544056576. Its totient is φ = 102863520.

The previous prime is 258116657. The next prime is 258116669. The reversal of 258116660 is 66611852.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 258116660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258116669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18392 + ... + 29231.

It is an arithmetic number, because the mean of its divisors is an integer number (22669024).

Almost surely, 2^258116660 is an apocalyptic number.

258116660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258116660 is an abundant number, since it is smaller than the sum of its proper divisors (285939916).

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

258116660 is a wasteful number, since it uses less digits than its factorization.

258116660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47903 (or 47901 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 258116660 is about 16066.0094609707. The cubic root of 258116660 is about 636.7056136306.

The spelling of 258116660 in words is "two hundred fifty-eight million, one hundred sixteen thousand, six hundred sixty".