#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	const int mod = 1e9 + 7;
	int n;
	cin >> n;
	vector<long long> a(n + 1), b(n + 1);
	a[1] = 1; b[1] = 1;
	for (int i = 2; i <= n; i++) {
		b[i] = i * a[i - 1];
		a[i] = i * a[i - 1] + a[i - 2];
		b[i] %= mod;
		a[i] %= mod;
	}
	cout << b[n] << endl;
	return 0;
}