import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); long N = sc.nextLong(); int count = 0; for (long i = 2; i < Math.sqrt(N); i++) { if (N % i == 0) { count++; } } System.out.println(1 < count ? "YES" : "NO"); } }