231664068 is a `hidden beast` number, since 2 + 3 + 1 + 6 + 640 + 6 + 8 = 666.
It is a tau number, because it is divible by the number of its divisors (36).
It is an unprimeable number.
Almost surely, 2231664068 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.
231664068 is a wasteful number, since it uses less digits than its factorization.
231664068 is an evil number, because the sum of its binary digits is even.
The square root of 231664068 is about 15220.5147087738. The cubic root of 231664068 is about 614.1666444227.
The spelling of 231664068 in words is "two hundred thirty-one million, six hundred sixty-four thousand, sixty-eight".