258798587 has 2 divisors, whose sum is σ = 258798588. Its totient is φ = 258798586.

The previous prime is 258798577. The next prime is 258798593. The reversal of 258798587 is 785897852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258798587 is a prime.

It is not a weakly prime, because it can be changed into another prime (258798577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129399293 + 129399294.

It is an arithmetic number, because the mean of its divisors is an integer number (129399294).

Almost surely, 2^258798587 is an apocalyptic number.

258798587 is a deficient number, since it is larger than the sum of its proper divisors (1).

258798587 is an equidigital number, since it uses as much as digits as its factorization.

258798587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11289600, while the sum is 59.

The square root of 258798587 is about 16087.2181249587. The cubic root of 258798587 is about 637.2658318217.

The spelling of 258798587 in words is "two hundred fifty-eight million, seven hundred ninety-eight thousand, five hundred eighty-seven".