298689 has 4 divisors (see below), whose sum is σ = 398256. Its totient is φ = 199124.

The previous prime is 298687. The next prime is 298691. The reversal of 298689 is 986892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (298687) and next prime (298691).

It is a cyclic number.

It is not a de Polignac number, because 298689 - 2¹ = 298687 is a prime.

It is a D-number.

298689 is a lucky number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 298689.

It is not an unprimeable number, because it can be changed into a prime (298681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49779 + ... + 49784.

It is an arithmetic number, because the mean of its divisors is an integer number (99564).

2²⁹⁸⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

298689 is a deficient number, since it is larger than the sum of its proper divisors (99567).

298689 is an equidigital number, since it uses as much as digits as its factorization.

298689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99566.

The product of its digits is 62208, while the sum is 42.

The square root of 298689 is about 546.5244733770. The cubic root of 298689 is about 66.8456385505.

The spelling of 298689 in words is "two hundred ninety-eight thousand, six hundred eighty-nine".