from math import sqrt
def PrimeFactorization(N):
    ret = 0
    for i in range(2,int(sqrt(N))+1):
        while N % i == 0:
            ret += 1
            N //= i
    if N > 1:
        ret += 1
    return ret

N = int(input())
if PrimeFactorization(N) >= 3:
    print('YES')
else:
    print('NO')