It is a tau number, because it is divible by the number of its divisors (20).
It is a plaindrome in base 13.
It is a nialpdrome in base 6 and base 10.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 7760.
It is an unprimeable number.
27760 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 7760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9114).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7760 is a wasteful number, since it uses less digits than its factorization.
7760 is an evil number, because the sum of its binary digits is even.
The square root of 7760 is about 88.0908621822. The cubic root of 7760 is about 19.7979659850.
The spelling of 7760 in words is "seven thousand, seven hundred sixty".