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) >= 2:
    print("YES")
else:
    for s in a:
        if s[1] > 1:
            print("YES")
            break
    else:
        print("NO")