n=int(input())

def fact(n):
  b=2
  fct=[]
  while b*b<=n:
    while n%b==0:
      n//=b
      fct.append(b)
    b=b+1
  if n>1:
    fct.append(n)
  return fct

if len(fact(n))>=3:
  print('YES')
else:
  print('NO')