#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;


    int p[10000001] = {0};
    

int main() {
    
    long long N;
    cin >> N;
    
    for ( int i = 2; i <= 10000000; i++ ) {
        if ( !p[i] ) {
            long long j = i*2;
            while ( j <= 10000000 ) {
                p[j] = 1;
                j += i;
            }
        }
    }
    
    bool ans = false;
    int a = 0;
    for ( int i = 2; i <= 10000000; i++ ) {
        if ( !p[i] && (N%i) == 0 ) {
            long long n = N;
            while ( !(n%i) ) {
                n /= i;
                a++;
            }
        }
        if ( a >= 2 ) { ans = true; break; }
    }
    
    cout << ( ans ? "YES" : "NO" ) << endl;
    
    
    return 0;
}