from collections import defaultdict

def Factorize(N):
    assert N>=1
    factors=defaultdict(int)
    for p in range(2,N):
        if p**2>N:
            break
        while N%p==0:
            factors[p]+=1
            N//=p
    if N!=1:
        factors[N]+=1
    return factors

N=int(input())
if len(Factorize(N))<=2:
    ans="Yes"
else:
    ans="No"
print(ans)