6345216 is a `hidden beast` number, since 634 + 5 + 21 + 6 = 666.
It is an alternating number because its digits alternate between even and odd.
It is a self number, because there is not a number n which added to its sum of digits gives 6345216.
It is a congruent number.
It is an unprimeable number.
Almost surely, 26345216 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 6345216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10063251).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6345216 is an frugal number, since it uses more digits than its factorization.
6345216 is an evil number, because the sum of its binary digits is even.
The square root of 6345216 is about 2518.9712185732. The cubic root of 6345216 is about 185.1322745274.
The spelling of 6345216 in words is "six million, three hundred forty-five thousand, two hundred sixteen".