258284863 has 2 divisors, whose sum is σ = 258284864. Its totient is φ = 258284862.

The previous prime is 258284861. The next prime is 258284899. The reversal of 258284863 is 368482852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258284863 - 2¹ = 258284861 is a prime.

It is a super-2 number, since 2×258284863² = 133422140909857538, which contains 22 as substring.

Together with 258284861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258284861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129142431 + 129142432.

It is an arithmetic number, because the mean of its divisors is an integer number (129142432).

Almost surely, 2^258284863 is an apocalyptic number.

258284863 is a deficient number, since it is larger than the sum of its proper divisors (1).

258284863 is an equidigital number, since it uses as much as digits as its factorization.

258284863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 737280, while the sum is 46.

The square root of 258284863 is about 16071.2433557581. The cubic root of 258284863 is about 636.8438877216.

The spelling of 258284863 in words is "two hundred fifty-eight million, two hundred eighty-four thousand, eight hundred sixty-three".