import math

N = int(input())
if N == 1:
    exit(print("NO"))

def make_divisors(n):
    lower_divisors , upper_divisors = [], []
    i = 1
    while i*i <= n:
        if n % i == 0:
            lower_divisors.append(i)
            if i != n // i:
                upper_divisors.append(n//i)
        i += 1
    return lower_divisors + upper_divisors[::-1]

def is_prime(n):
    sqrt_n = math.ceil(math.sqrt(n))
    for i in range(2, sqrt_n + 1):
        if n % i == 0:
            return False
        return True

yakusu = make_divisors(N)
yakusu.pop(0)
yakusu.pop(-1)


for y in yakusu:
    if not is_prime(y):
        print("YES")
        exit()

print("NO")