n=int(raw_input())
isValid=False
d={}
c=0
while True:
  if n%2==1: break
  c+=1
  n/=2
if c>0: d[2]=c
i=3
while i**2<=n:
  c=0
  while True:
    if n%i!=0: break
    c+=1
    n/=i
  if c>0:
    d[i]=c
  i+=2
if n>1: d[n]=1
count = sum(d.values())
if count>=3: print "YES"
else: print "NO"