def factorization(n):
    arr = []
    temp = n
    for i in range(2, int(-(-n**0.5//1))+1):
        if temp%i==0:
            cnt=0
            while temp%i==0:
                cnt+=1
                temp //= i
            arr.append([i, cnt])
    if temp!=1:
        arr.append([temp, 1])

    if arr==[]:
        arr.append([n, 1])
    return arr

N = int(input())
a = factorization(N)
if len(a) == 1 and a[0][1] <= 2:
    print('NO')
elif len(a) == 2 and a[0][1] == a[1][1] == 1:
    print('NO')
else:
    print('YES')