import strutils, tables

proc factorize(x: int): CountTable[int] =
  var x = x
  result = initCountTable[int]()
  var d = 2
  while d*d <= x:
    while x mod d == 0:
      result.inc(d, 1)
      x = x div d
    d += 1
  if x > 1:
    result.inc(x, 1)

var n = stdin.readLine.parseInt
var res = factorize(n)
var cnt = 0
for k, v in res.pairs:
  if k != n:
    cnt += v
echo if cnt>=3: "YES" else: "NO"