N = int(input())

cnt = 0
lst = []
for i in range(2, N+1):
	if N < i**2:
		break
	if N % i == 0:
		while N % i == 0:
			N //= i
			lst.append(i)
		cnt += 1
if N != 1:
	cnt += 1
if cnt <= 2:
	print('Yes')
else:
	print('No')