258323647 has 4 divisors (see below), whose sum is σ = 258708160. Its totient is φ = 257939136.

The previous prime is 258323627. The next prime is 258323669. The reversal of 258323647 is 746323852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 258323647 - 2⁷ = 258323519 is a prime.

It is a super-2 number, since 2×258323647² = 133462213198761218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258323627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191247 + ... + 192592.

It is an arithmetic number, because the mean of its divisors is an integer number (64677040).

Almost surely, 2^258323647 is an apocalyptic number.

258323647 is a deficient number, since it is larger than the sum of its proper divisors (384513).

258323647 is an equidigital number, since it uses as much as digits as its factorization.

258323647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384512.

The product of its digits is 241920, while the sum is 40.

The square root of 258323647 is about 16072.4499377040. The cubic root of 258323647 is about 636.8757622404.

The spelling of 258323647 in words is "two hundred fifty-eight million, three hundred twenty-three thousand, six hundred forty-seven".