258360861 has 16 divisors (see below), whose sum is σ = 376891200. Its totient is φ = 156126720.

The previous prime is 258360853. The next prime is 258360881. The reversal of 258360861 is 168063852.

It is a happy number.

It is not a de Polignac number, because 258360861 - 2³ = 258360853 is a prime.

It is a super-2 number, since 2×258360861² = 133500668993322642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258360881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301 + ... + 22733.

It is an arithmetic number, because the mean of its divisors is an integer number (23555700).

Almost surely, 2^258360861 is an apocalyptic number.

It is an amenable number.

258360861 is a deficient number, since it is larger than the sum of its proper divisors (118530339).

258360861 is a wasteful number, since it uses less digits than its factorization.

258360861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22796.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 258360861 is about 16073.6075913281. The cubic root of 258360861 is about 636.9063434601.

The spelling of 258360861 in words is "two hundred fifty-eight million, three hundred sixty thousand, eight hundred sixty-one".