#coding: utf-8
##yuki_36
import math

n=int(raw_input())

temp=0
for i in xrange(2,int(math.sqrt(n))+1):
 while n%i==0:
  temp+=1
  n/=i
if n>1:
 temp+=1
if temp>=3:
 print "YES"
else:
 print "NO"