It is a tau number, because it is divible by the number of its divisors (80).
It is a congruent number.
It is an unprimeable number.
266960 is an apocalyptic number.
66960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 66960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119040).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
66960 is a wasteful number, since it uses less digits than its factorization.
66960 is an odious number, because the sum of its binary digits is odd.
The square root of 66960 is about 258.7663038342. The cubic root of 66960 is about 40.6073967126.
The spelling of 66960 in words is "sixty-six thousand, nine hundred sixty".