import sys
if sys.platform =='ios':
	import clipboard
	a=clipboard.get()
	a = a.split('\n')
	text = '\n'.join(a)
	with open('input_file.txt','w') as f:
		f.write(text)
	sys.stdin = open('input_file.txt')
	
A = int(input())
for i in range(3,(int((A)**0.5)+1)):
	if A%i == 0:
		print("YES")
		exit()
		
print("NO")