It is a tau number, because it is divible by the number of its divisors (180).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a congruent number.
It is an unprimeable number.
806400 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2806400 is an apocalyptic number.
806400 is a gapful number since it is divisible by the number (80) 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 806400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649076).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
806400 is a wasteful number, since it uses less digits than its factorization.
806400 is an evil number, because the sum of its binary digits is even.
The square root of 806400 is about 897.9977728257. The cubic root of 806400 is about 93.0786708580.
The spelling of 806400 in words is "eight hundred six thousand, four hundred".