#include <bits/stdc++.h>

using namespace std;

int n;

bool judge(int x) {
    int res = 0;
    int num = x;
    while (x) {
        int tmp = x % 10;
        res += tmp * tmp * tmp;
        x /= 10;
    }
    return res == num;
}

int main() {
    while (~scanf("%d", &n)) {
        puts(judge(n) ? "YES" : "NO");
    }
    return 0;
}