258372823 has 4 divisors (see below), whose sum is σ = 269606448. Its totient is φ = 247139200.

The previous prime is 258372797. The next prime is 258372833. The reversal of 258372823 is 328273852.

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 258372823 - 2⁵ = 258372791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258372833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5616778 + ... + 5616823.

It is an arithmetic number, because the mean of its divisors is an integer number (67401612).

Almost surely, 2^258372823 is an apocalyptic number.

258372823 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

258372823 is a deficient number, since it is larger than the sum of its proper divisors (11233625).

258372823 is a wasteful number, since it uses less digits than its factorization.

258372823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11233624.

The product of its digits is 161280, while the sum is 40.

The square root of 258372823 is about 16073.9796876816. The cubic root of 258372823 is about 636.9161728077.

The spelling of 258372823 in words is "two hundred fifty-eight million, three hundred seventy-two thousand, eight hundred twenty-three".