#include <iostream>
#include <stdio.h>
#include <cstring>
#include <math.h>
#include <algorithm>
#include <vector>
#define rep(i,n) for(int i=0;i<n;i++)
#define FOR(i,a,b) for(int i=a;i<b;i++)
#define ll long long
#define LL long long
#define mass 1000000007
using namespace std;


int main(){
	ll x;
	cin>>x;
	ll y=1;
	int d=0;
	do{
		d=0;
		if(x%2==0){
			x/=2;
			if(y%2==0){
				y/=2;
			}else{
				y*=2;
			}
			d=1;
		}
	}while(d);

	for(ll i=3;x>1;i+=2){
		if(x%i==0){
			x/=i;
			if(y%i==0){
				y/=i;
			}else{
				y*=i;
			}
			i-=2;
		}
	}
	cout<<y<<endl;

	return 0;
	

}