def solve():
    N = int(input())

    c = 0
    i = 2
    while i * i < N:
        while N % i == 0:
            N /= i
            c += 1
        i += 1
    if N > 1:
        c += 1
    return c >= 3


def main():
    print('YES' if solve() else 'NO')


if __name__ == '__main__':
    main()