198287 has 4 divisors (see below), whose sum is σ = 200760. Its totient is φ = 195816.

The previous prime is 198281. The next prime is 198301. The reversal of 198287 is 782891.

It is a happy number.

198287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 198287 - 2⁶ = 198223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198287.

It is not an unprimeable number, because it can be changed into a prime (198281) 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, 1112 + ... + 1277.

It is an arithmetic number, because the mean of its divisors is an integer number (50190).

2¹⁹⁸²⁸⁷ is an apocalyptic number.

198287 is a deficient number, since it is larger than the sum of its proper divisors (2473).

198287 is an equidigital number, since it uses as much as digits as its factorization.

198287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

The product of its digits is 8064, while the sum is 35.

The square root of 198287 is about 445.2942847152. The cubic root of 198287 is about 58.3129143954.

The spelling of 198287 in words is "one hundred ninety-eight thousand, two hundred eighty-seven".