n = int(input())
plist = [2] + [ i for i in range(3,int(n**0.5)+2,2) ]

if n < 7:
    print("NO")

else:
    q = 0
    clist = []
    for i in plist:
        if n % i == 0:
            clist.append(i)
            n //= i
            if n % i == 0 and n != i:
                print("YES")
                q = 1
                break
            elif len(clist) == 3:
                print("YES")
                q = 1
                break
    if q == 0:
        if len(clist) == 2 and n != 1:
            print("YES")
        else:
            print("NO")