6464 is an undulating number in base 10.
It is a nialpdrome in base 9.
It is a congruent number.
It is an upside-down number.
26464 is an apocalyptic number.
6464 is a gapful number since it is divisible by the number (64) 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 6464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6477).
6464 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6464 is a wasteful number, since it uses less digits than its factorization.
6464 is an evil number, because the sum of its binary digits is even.
The square root of 6464 is about 80.3990049690. The cubic root of 6464 is about 18.6280380312.
The spelling of 6464 in words is "six thousand, four hundred sixty-four".