#include <stdio.h>
int main(){
  long long int i,j,N,x;
  int count=0;
  scanf("%lld",&N);
  x=N;
  for(i=2;i*i<=N;i++){
    while(1){
      if(x%i!=0)break;
      x=x/i;
      count++;
    }
    if(count>2)break;
  }
  if(count>2)printf("YES\n");
  else  printf("NO\n");
  return 0;
}