#include<bits/stdc++.h>
using namespace std;

/* BOOST MULTIPRECISION
#include<boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
//*/

typedef long long ll;

#define rep(i, s, n) for (int i = (int)(s); i < (int)(n); i++)
#define rrep(i, s, n) for (int i = (int)(n)-1; i >= (int)(s); i--)

template <typename T> bool chmin(T &a, const T &b) {
	if (a <= b) return false;
	a = b;
	return true;
}

template <typename T> bool chmax(T &a, const T &b) {
	if (a >= b) return false;
	a = b;
	return true;
}

template <typename T> T max(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmax(ret, a[i]);
	return ret;
}

template <typename T> T min(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmin(ret, a[i]);
	return ret;
}

template <typename T> T sum(vector<T> &a){
	T ret = 0;
	for (int i=0; i<(int)a.size(); i++) ret += a[i];
	return ret;
}

void jikken(){
	
	int n; cin >> n;
	vector<int> d;
	rep(i,1,n+1){
		if (n % i == 0){
			d.push_back(i);
		}
	}
	

	int m = d.size();
	// gcd, type
	vector memo(n+1, vector<bool>(1<<m));
	vector seen(n+1, vector<bool>(1<<m));
	auto dfs = [&](auto self, int gcd, int typ, int player) -> bool {
		if (seen[gcd][typ]){
			return memo[gcd][typ];
		}
		if (typ == 0){
			seen[gcd][typ] = 1;
			if (gcd != 1){
				memo[gcd][typ] = 1;
			}else{
				memo[gcd][typ] = 0;
			}
			return memo[gcd][typ];
		}
		bool ret;
		if (player == 0) ret = 1;
		else ret = 0;
		rep(i,0,m){
			if (typ >> i & 1){
				if (player == 1){
					if (self(self, __gcd(gcd, d[i]), typ^(1<<i), 0)){
						ret = 1;
					}
				}else{
					if (!self(self, gcd, typ^(1<<i), 1)){
						ret = 0;
					}
				}
			}
		}
		seen[gcd][typ] = 1;
		memo[gcd][typ] = ret;
		return ret;
	};

	if (dfs(dfs, 0, (1 << m) - 1, 1)) cout << "Y\n";
	else cout << "N\n";
}

vector<int> pfact(ll n){
	vector<int>ret;
	for (ll i=2; i*i<=n; i++){
		if (n%i == 0){
			int cnt = 0;
			while(n%i == 0){
				n /= i;
				cnt++;
			}
			ret.push_back(cnt);
		}
	}
	if (n > 1) ret.push_back(1);
	sort(ret.begin(), ret.end());
	return ret;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	ll n; cin >> n;
	vector<int> a = pfact(n);
	if (a.size() == 0){
		cout << "N\n";
	}else if (a.size() == 1){
		if (a[0] % 2 == 1){
			cout << "Y\n";
		}else{
			cout << "N\n";
		}
	}else if (a.size() == 2){
		if (a[0] == 1 && a[1] == 1){
			cout << "Y\n";
		}else{
			cout << "N\n";
		}
	}else{
		cout << "N\n";
	}
}