#include "iostream"
using namespace std;

char num[10003];
int sum;
long long int ans=1;
bool flag=true;

int main() {
	cin >> num;
	for (int i = 0;; i++) {
		if (num[i] == NULL) {
			cout << num<<"\n";
			return 0;
		}
		if (num[i] != num[0])break;
	}
	//for (int i = 0;; i++) {
	//	if (num[i] == NULL)break;
	//	cout << num[i] - '0';
	//}
	//cout << "\n";
	for (int i = 0;; i++) {
		if (num[i] == NULL) {
			ans = 8;
			flag = false;
		}
		if ((int)(num[i] - '0') % 8 != 0)break;
	}
	if (flag) {
		for (int i = 0;; i++) {
			if (num[i] == NULL) {
				ans = 4;
				flag = false;
			}
			if ((int)(num[i] - '0') % 4 != 0)break;
		}
	}
	if (flag) {
		for (int i = 0;; i++) {
			if (num[i] == NULL) {
				ans = 2;
				flag = false;
			}
			if ((int)(num[i] - '0') % 2 != 0)break;
		}
	}
	for (int i = 0;; i++) {
		if (num[i] == NULL)break;
		sum += num[i] - '0';
	}
	while (sum % 3 == 0) {
		sum /= 3;
		ans *= 3;
	}
	cout << ans<<"\n";
	return 0;
}