MOD = 998244353

def main():
    import sys
    N = int(sys.stdin.readline().strip())
    if N == 1:
        print(0)
        return

    # Precompute factorial modulo MOD up to N
    fact = [1] * (N + 1)
    for i in range(1, N+1):
        fact[i] = fact[i-1] * i % MOD

    inv6 = 166374059  # Modular inverse of 6 modulo 998244353

    # Calculate (N! * (N-1) * (N+4)) // 6 mod MOD
    numerator = fact[N] * (N-1) % MOD
    numerator = numerator * (N + 4) % MOD
    ans = numerator * inv6 % MOD
    print(ans)

if __name__ == "__main__":
    main()