7,845,601

Number
$7 \, 845 \, 601$ (seven million, eight hundred and forty-five thousand, six hundred and one) is:
 * $2801^2$


 * The $2801$st square number:
 * $6 \, 754 \, 801 = 2801 \times 2801$


 * The $7$th and last after $1 \, 048 \, 576$, $1 \, 056 \, 784$, $1 \, 085 \, 764$, $5 \, 740 \, 816$, $5 \, 764 \, 801$, $6 \, 754 \, 801$ of a sequence of $7$ numbers which are square and anagrams of each other