It is a tau number, because it is divible by the number of its divisors (120).
It is a congruent number.
It is an unprimeable number.
2647280 is an apocalyptic number.
647280 is a gapful number since it is divisible by the number (60) 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 647280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
647280 is a wasteful number, since it uses less digits than its factorization.
647280 is an evil number, because the sum of its binary digits is even.
The square root of 647280 is about 804.5371340094. The cubic root of 647280 is about 86.5029123503.
The spelling of 647280 in words is "six hundred forty-seven thousand, two hundred eighty".