package main

import (
	"fmt"
)

func divisor(n int) []int {
	res := make([]int, 0)
	for i := 1; i*i <= n; i++ {
		if n%i == 0 {
			res = append(res, i)
			if i != n/i {
				res = append(res, n/i)
			}
		}
	}
	return res
}

func main() {
	var N int
	fmt.Scan(&N)
	x := divisor(N)
	if len(x) > 2 {
		fmt.Println("YES")
	} else {
		fmt.Println("NO")
	}
}