Multipling 7311616 by its sum of digits (25), we get a square (182790400 = 135202).
It is a happy number.
The square root of 7311616 is 2704.
7311616 is nontrivially palindromic in base 6.
It is a Duffinian number.
It is a nialpdrome in base 15.
It is a zygodrome in base 15.
It is an unprimeable number.
Almost surely, 27311616 is an apocalyptic number.
7311616 is the 2704-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 7311616
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7311616 is an frugal number, since it uses more digits than its factorization.
7311616 is an odious number, because the sum of its binary digits is odd.
The cubic root of 7311616 is about 194.0905801545.
The spelling of 7311616 in words is "seven million, three hundred eleven thousand, six hundred sixteen".