660706552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2660706552 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
660706552 is a wasteful number, since it uses less digits than its factorization.
660706552 is an odious number, because the sum of its binary digits is odd.
The square root of 660706552 is about 25704.2127286560. The cubic root of 660706552 is about 870.9693480601.
The spelling of 660706552 in words is "six hundred sixty million, seven hundred six thousand, five hundred fifty-two".