298591 has 4 divisors (see below), whose sum is σ = 304992. Its totient is φ = 292192.

The previous prime is 298589. The next prime is 298601. The reversal of 298591 is 195892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 298591 - 2¹ = 298589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3130 + ... + 3223.

It is an arithmetic number, because the mean of its divisors is an integer number (76248).

2²⁹⁸⁵⁹¹ is an apocalyptic number.

298591 is a deficient number, since it is larger than the sum of its proper divisors (6401).

298591 is an equidigital number, since it uses as much as digits as its factorization.

298591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400.

The product of its digits is 6480, while the sum is 34.

The square root of 298591 is about 546.4348085545. The cubic root of 298591 is about 66.8383270557.

The spelling of 298591 in words is "two hundred ninety-eight thousand, five hundred ninety-one".