fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let n: u64 = s.trim().parse().unwrap();
	let mut a = "No";
	for i in 1..1000001 {
		if i * i * i == n {
			a = "Yes";
			break;
		}
	}
	println!("{a}")
}