258678793 has 4 divisors (see below), whose sum is σ = 258845440. Its totient is φ = 258512148.

The previous prime is 258678779. The next prime is 258678853. The reversal of 258678793 is 397876852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258678793 - 2⁹ = 258678281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258678593) 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, 80973 + ... + 84106.

It is an arithmetic number, because the mean of its divisors is an integer number (64711360).

Almost surely, 2^258678793 is an apocalyptic number.

It is an amenable number.

258678793 is a deficient number, since it is larger than the sum of its proper divisors (166647).

258678793 is a wasteful number, since it uses less digits than its factorization.

258678793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166646.

The product of its digits is 5080320, while the sum is 55.

The square root of 258678793 is about 16083.4944275179. The cubic root of 258678793 is about 637.1674897018.

The spelling of 258678793 in words is "two hundred fifty-eight million, six hundred seventy-eight thousand, seven hundred ninety-three".