#include<bits/stdc++.h>
#define FL(i,a,b) for(ll i=(a);i<=(b);i++)
#define FR(i,a,b) for(ll i=(a);i>=(b);i--)
#define ll long long
using namespace std;
const ll MAXN = 1e4 + 10;
char s[MAXN]; 
ll cnt[10];
signed main(){
	scanf("%s",s+1);
	ll n=strlen(s+1);
	FL(i,1,n) cnt[s[i]-'0']++;
	FL(i,0,9) if(cnt[i]==n) printf("%s\n",s+1),exit(0);
	ll mx=0;
	FL(i,1,9){
		if(!cnt[i]) continue;
		FL(j,0,i-1){
			if(!cnt[j]) continue;
			mx=((!mx)?9*(i-j):__gcd(mx,9*(i-j)));
		}
	}
	FR(i,mx,1){
		if(mx%i) continue;
		ll las=0;
		FL(j,1,n) las=((las*10)%i+(ll)(s[j]-'0'))%i;
		if(!las) printf("%lld\n",i),exit(0);
	}
}