#include <iostream>
#include <vector>
#include <string>
#include <cmath>
using namespace std;
typedef long long ll;

ll gcd(ll a, ll b) {
	while (a) {
		b %= a;
		swap(a, b);
	}
	return b;
}

bool X[10];
bool Y[10];
int main()
{
	for (int i = 1; i < 14; i++)Y[i] = true;
	string s; cin >> s;

	vector<int> e(s.size());
	for (int i = 0; i < s.size(); i++) {
		e[i] = s[i] - '0';
	}

	int sum = 0;
	for (int i = 0; i < e.size(); i++) {
		if (e[i] % 2)Y[2] = false;
		X[e[i]] = true;
		sum += e[i];
	}
	int cnt = 0;
	for (int i = 0; i < 10; i++) {
		if (X[i])cnt++;
	}
	if (cnt == 1) {
		cout << s << endl;
		return 0;
	}

	if (sum % 3)Y[3] = false;
	if (sum % 9)Y[9] = false;

	if (!Y[2]) {
		Y[4] = false;
		Y[6] = false;
		Y[8] = false;
	}
	else {
		if (X[2] || X[6]) Y[4] = false;
		if (!Y[3]) Y[6] = false;
	}

	Y[5] = false;
	Y[7] = false;
	Y[8] = false;

	int ans = 1;
	for (int i = 9; i > 0; i--) {
		if (Y[i]) {
			int a = gcd(ans,i);
			ans *= i;
			ans /= a;
		}
	}

	cout << ans << endl;

    return 0;
}