It is an Ulam number.
It is a congruent number.
It is an unprimeable number.
2720460 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 720460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867888).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
720460 is a wasteful number, since it uses less digits than its factorization.
720460 is an evil number, because the sum of its binary digits is even.
The square root of 720460 is about 848.7991517432. The cubic root of 720460 is about 89.6471783323.
Adding to 720460 its reverse (64027), we get a palindrome (784487).
The spelling of 720460 in words is "seven hundred twenty thousand, four hundred sixty".