71,973

Number
$71 \, 973$ (seventy-one thousand, nine hundred and seventy-three) is:


 * $3^2 \times 11 \times 727$


 * One of the elements of one of the $4$-cycles to which Kaprekar's process on some $5$-digit numbers converges:
 * $71 \, 973 \to 83 \, 952 \to 74 \, 943 \to 62 \, 964 \to 71 \, 973$