N=int(input())
cnt=0
for p in range(2,N):
    while N%p==0:
        N//=p
        cnt+=1
    if N==1:
        break
    if p**2>N:
        break
if N!=1:
    cnt+=1
if cnt>=3:
    ans='YES'
else:
    ans='NO'
print(ans)