664063607836 has 6 divisors (see below), whose sum is σ = 1162111313720. Its totient is φ = 332031803916.

The previous prime is 664063607789. The next prime is 664063607843. The reversal of 664063607836 is 638706360466.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83007950976 + ... + 83007950983.

Almost surely, 2^664063607836 is an apocalyptic number.

It is an amenable number.

664063607836 is a deficient number, since it is larger than the sum of its proper divisors (498047705884).

664063607836 is a wasteful number, since it uses less digits than its factorization.

664063607836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166015901963 (or 166015901961 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 55.

The spelling of 664063607836 in words is "six hundred sixty-four billion, sixty-three million, six hundred seven thousand, eight hundred thirty-six".