import scala.annotation.tailrec
import scala.io.StdIn

object Problem036 {

  // 素因数分解
  def primeFactorization(n: Long): List[Long] = {
    @tailrec
    def factor(n: Long, div: Long, result: List[Long]): List[Long] = {
      if (n < div * div) {
        n :: result
      } else if (n % div == 0) {
        factor(n / div, div, div :: result)
      } else {
        factor(n, div + 1, result)
      }
    }
    factor(n, 2, Nil)
  }

  def proc(n: Long): String = {
    val pf = primeFactorization(n)
    if (pf.length >= 3) "YES" else "NO"
  }

  def main(args: Array[String]) {
    val n = StdIn.readLong()
    val result: String = proc(n)
    println(result)
  }
}