6750 is nontrivially palindromic in base 7 and base 14.
It is a nialpdrome in base 15.
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 6750.
It is an unprimeable number.
26750 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 6750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6750 is a wasteful number, since it uses less digits than its factorization.
6750 is an evil number, because the sum of its binary digits is even.
The square root of 6750 is about 82.1583836258. The cubic root of 6750 is about 18.8988157484.
The spelling of 6750 in words is "six thousand, seven hundred fifty".