258665479 has 2 divisors, whose sum is σ = 258665480. Its totient is φ = 258665478.

The previous prime is 258665441. The next prime is 258665543. The reversal of 258665479 is 974566852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258665479 - 2¹⁵ = 258632711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258665579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129332739 + 129332740.

It is an arithmetic number, because the mean of its divisors is an integer number (129332740).

Almost surely, 2^258665479 is an apocalyptic number.

258665479 is a deficient number, since it is larger than the sum of its proper divisors (1).

258665479 is an equidigital number, since it uses as much as digits as its factorization.

258665479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 52.

The square root of 258665479 is about 16083.0805196020. The cubic root of 258665479 is about 637.1565580061.

The spelling of 258665479 in words is "two hundred fifty-eight million, six hundred sixty-five thousand, four hundred seventy-nine".