#include<cstdio>
#include<iostream>
#include<algorithm>
#include<cstring>
#include<cstdlib>
#include<cmath>
using namespace std;
int n,m,t,x;
int main(){
	scanf("%d",&n);
	m=n;t=0;
	while(m){
		x=m%10;m=m/10;
		t+=x*x*x;
	}
	if(t==n)	printf("YES");
	else	printf("NO");
}