It is an Ulam number.
It is a nialpdrome in base 16.
It is a congruent number.
It is an unprimeable number.
64980 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
264980 is an apocalyptic number.
64980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
64980 is the 360-th triangular number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 64980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104013).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
64980 is a wasteful number, since it uses less digits than its factorization.
64980 is an odious number, because the sum of its binary digits is odd.
The square root of 64980 is about 254.9117494350. The cubic root of 64980 is about 40.2031333416.
The spelling of 64980 in words is "sixty-four thousand, nine hundred eighty".