import java.math.*; import java.util.*; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); long n=sc.nextLong(); if(n==1){ System.out.println("NO"); return; } int count=0; for(long i=2;i*i<=n;i++){ while(n%i==0){ n/=i; count++; } } if(count>2){ System.out.println("YES"); }else System.out.println("NO"); } }