import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner koko = new Scanner(System.in);
        int n = koko.nextInt();
        int count =0;
        if(n==1||n==2||n==3){
            System.out.println("NO");
        }else{
            for(int i=2; i<n; i++){
                if(n%i==0){
                    for(int j=2; j<i; j++){
                        if(i%j==0){
                            count++;
                        }
                    }
                }
            }
            if(count>0){
                System.out.println("YES");
            }else{
                System.out.println("NO");
            }
        }
    }
}