7744 (number)
# 7744 (number)

7744 is the natural number following 7743 and preceding 7745.

## In mathematics

7744 is:

* the square of 88, and is the smallest nonzero square each of whose decimal digits occur exactly twice.
* the sum of two fifth powers: 7744 = $6^5$ + $(−2)^5.$
* a Harshad number in bases 5, 9, 10, 12, 14 and 15.
* the aliquot sum of both 10316 and 15482.
* part of the 29-aliquot tree.

The complete aliquot sequence starting at 7716 is: 7716, 10316, 7744, 9147, 3053, 115, 29, 1, 0

