N = int(input())

x = 0

for i in range(2, int(N ** 0.5) + 1):
    
    while N % i == 0:
        
        x += 1
        
        N //= i
        
if N > 1:
    
    x += 1
    
if x > 2:
    
    print('YES')
    
else:
    
    print('NO')