n = int(input())
divs = []
for i in range(2,int(n**0.5)+1):
	if n%i == 0:
		divs.append(i)
		while n%i == 0:
			n //= i

if n != 1:
	divs.append(n)

print("Yes" if len(divs) <= 2 else "No")