N=int(input())
c=0
if N!=1:
    while N%2==0:
        N//=2
        c+=1
        if c>=3: break
    for j in range(3,int(N**0.5)+1,2):
        while N%j==0:
            N//=j
            c+=1
            if c>=3: break
if N>1: c+=1
print("YES" if c>=3 else "NO")