664306045660 has 24 divisors (see below), whose sum is σ = 1395061607520. Its totient is φ = 265718816064.

The previous prime is 664306045631. The next prime is 664306045703. The reversal of 664306045660 is 66540603466.

It is a self number, because there is not a number n which added to its sum of digits gives 664306045660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1680481 + ... + 2037799.

It is an arithmetic number, because the mean of its divisors is an integer number (58127566980).

Almost surely, 2^664306045660 is an apocalyptic number.

It is an amenable number.

664306045660 is an abundant number, since it is smaller than the sum of its proper divisors (730755561860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664306045660 is a wasteful number, since it uses less digits than its factorization.

664306045660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450285 (or 450283 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 46.

The spelling of 664306045660 in words is "six hundred sixty-four billion, three hundred six million, forty-five thousand, six hundred sixty".