258666851 has 2 divisors, whose sum is σ = 258666852. Its totient is φ = 258666850.

The previous prime is 258666791. The next prime is 258666853. The reversal of 258666851 is 158666852.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258666851 - 2⁶ = 258666787 is a prime.

Together with 258666853, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 258666796 and 258666805.

It is not a weakly prime, because it can be changed into another prime (258666853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129333425 + 129333426.

It is an arithmetic number, because the mean of its divisors is an integer number (129333426).

Almost surely, 2^258666851 is an apocalyptic number.

258666851 is a deficient number, since it is larger than the sum of its proper divisors (1).

258666851 is an equidigital number, since it uses as much as digits as its factorization.

258666851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 47.

The square root of 258666851 is about 16083.1231730656. The cubic root of 258666851 is about 637.1576845284.

Subtracting from 258666851 its reverse (158666852), we obtain a palindrome (99999999).

The spelling of 258666851 in words is "two hundred fifty-eight million, six hundred sixty-six thousand, eight hundred fifty-one".