#include<iostream>
#include<map>

// n を素因数分解し、素因数を返す
std::map<long long, int> pf(long long n) {
	// <素数,出現回数>
	std::map<long long, int> m;
	while (n % 2 == 0) {
		m[2]++;
		n /= 2;
	}

	while (n % 3 == 0) {
		m[3]++;
		n /= 3;
	}


	for (long long i = 6; i * i <= n; i += 6) {
		while ((i - 1) % n == 0) {
			m[i - 1]++;
			n /= (i - 1);
		}
		while ((i + 1) % n == 0) {
			m[i - 1]++;
			n /= (i - 1);
		}
	}

	return m;
}


int main() {
	long long n;

	std::cin >> n;

	std::map<long long, int> prime_factors = pf(n);

	long long num = 1;
	for (auto i = prime_factors.begin(); i != prime_factors.end(); i++) {
		if (i->second > 1) {
			if (i->first * i->first != n) {
				std::cout << "YES" << std::endl;
				return 0;
			}
		} else {
			num *= i->first;
		}
		if (num > 2 && num % 2 != 1 && num != n) {
			std::cout << "YES" << std::endl;
			return 0;
		}
	}

	std::cout << "NO" << std::endl;
	return 0;
}