65856 is nontrivially palindromic in base 10.
It is a tau number, because it is divible by the number of its divisors (56).
It is an ABA number since it can be written as A⋅BA, here for A=3, B=28.
It is an alternating number because its digits alternate between even and odd.
It is a congruent number.
65856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
265856 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 65856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
65856 is an equidigital number, since it uses as much as digits as its factorization.
65856 is an odious number, because the sum of its binary digits is odd.
The square root of 65856 is about 256.6242389175. The cubic root of 65856 is about 40.3829879686.
The spelling of 65856 in words is "sixty-five thousand, eight hundred fifty-six".