It is a happy number.
864576 is a `hidden beast` number, since 8 + 645 + 7 + 6 = 666.
It is a self number, because there is not a number n which added to its sum of digits gives 864576.
It is a congruent number.
It is an unprimeable number.
2864576 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 864576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
864576 is a wasteful number, since it uses less digits than its factorization.
864576 is an odious number, because the sum of its binary digits is odd.
The square root of 864576 is about 929.8257901349. The cubic root of 864576 is about 95.2652237638.
The spelling of 864576 in words is "eight hundred sixty-four thousand, five hundred seventy-six".