import java.util.Scanner
import scala.collection.mutable._

object no36{
    def main(args:Array[String]):Unit = {
        var n = scala.io.StdIn.readLong
        val res = ListBuffer[Int]()
        for(i <- 2 to (Math.sqrt(n).toInt+1)){
            while(n%i == 0){
                res += i
                n /= i
            }
        }
        if(n != 1) res += n.toInt
        if(2 < res.size){
            println("YES")
        }else{
            println("NO")
        }
    }
}