Write a program to input a number and check whether it is Magic Number or not? ( 64 = 6+4 = 10 = 1+0 = 1)

82)  Write a program to input a number and check whether it is Magic Number or not? ( 64 = 6+4 = 10 = 1+0 = 1) 

import java.util.*;
public class Magic_num
{
   public static void main(String args[ ])
   {
           Scanner sc = new Scanner (System.in);
           System.out.println("Enter a number");
           int a = sc.nextInt();
           int s = 10;
           while(s>9)
           {
               s=0;
               while(a>0)
               {
                   int d = a%10;
                   a = a/10;
                   s=s+d;
               }
               a=s;
           }
           if(s==1)
           {
               System.out.println("Entered number is a MAGIC Number");
           }
           else
           {
               System.out.println("Entered number is not a MAGIC Number");
           }
    }

}

Output : 

magic-number

           Write a program to input a number and check whether it is Amicable Pair Number or not?(220,284|| sum of factors of 220 is equal to 284 and sum of factors of 284 is equal to 220 then it is amicable pair Number)