258304660 has 24 divisors (see below), whose sum is σ = 549873576. Its totient is φ = 101905920.

The previous prime is 258304649. The next prime is 258304703. The reversal of 258304660 is 66403852.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31741956 + 226562704 = 5634^2 + 15052^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87001 + ... + 89920.

It is an arithmetic number, because the mean of its divisors is an integer number (22911399).

Almost surely, 2^258304660 is an apocalyptic number.

258304660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258304660 is an abundant number, since it is smaller than the sum of its proper divisors (291568916).

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

258304660 is a wasteful number, since it uses less digits than its factorization.

258304660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177003 (or 177001 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 258304660 is about 16071.8592577212. The cubic root of 258304660 is about 636.8601582278.

The spelling of 258304660 in words is "two hundred fifty-eight million, three hundred four thousand, six hundred sixty".