#include <math.h>
#include <string.h>
#include <stdio.h>

char prime[10001000];

void getPrime(int p){
    int i,j;
    for(i=0;i<p;i++){
        prime[i] = 1;
        if((i&1) == 0){
            prime[i] = 0;
        }
    }
    
    prime[0]=0;
    prime[1]=1;
    prime[2]=1;
    
    for(i=3;i*i<=p;i+=2){
        for(j=i+i;j<=p;j+=i){
            prime[j]=0;
        }
    }
}

int main(void){
	long long int n,tmp;
    int i, p = 10000000 + 1;
    int yes=0;
    getPrime(p);
    
    scanf("%lld", &n);
    
    for(i=2;(i<n && i<=p);i++){
        if(n%i == 0){
            if(prime[i]==1){
                
				int cnt=0;
				tmp = n;
				while(tmp%i == 0){
					tmp/=i;
					cnt++;
				}
				if(cnt>2){
					yes=1;
					break;
				}
            }else{
                yes = 1;
                break;
            }
        }
    }
    
    if(yes == 1){
        printf("YES\n");
    }else{
        printf("NO\n");
    }
    
    return 0;
}