n = int(input())
if n == 1:
    print("Yes")
else:
    factors = set()
    i = 2
    while i * i <= n:
        if n % i == 0:
            factors.add(i)
            while n % i == 0:
                n //= i
        i += 1
    if n > 1:
        factors.add(n)
    print("Yes" if len(factors) <= 2 else "No")