#include <cstdlib>
#include <cctype>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <algorithm>
#include <vector>
#include <string>
#include <iostream>
#include <sstream>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <fstream>
#include <numeric>
#include <iomanip>
#include <bitset>
#include <list>
#include <stdexcept>
#include <functional>
#include <utility>
#include <ctime>
using namespace std;
typedef long long LL;
typedef unsigned long long ULL;
#define MEM(a,b) memset((a),(b),sizeof(a))
const LL INF = 1e9 + 7;
const int N = 1e3 + 10;

int main()
{
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	LL n;
	cin >> n;	
	map<LL, int> mc;
	for (int i = 2; 1LL * i * i <= n; i++)
	{
		if (n % i) continue;
		mc[i] = 1;
		while (n % i == 0) mc[i] = 1;
	}
	if (n > 1) mc[n] = 1;
	if (mc.size() <= 2) puts("Yes");
	else puts("No");
	return 0;
}