664635000788 has 48 divisors (see below), whose sum is σ = 1272765795840. Its totient is φ = 301175186400.

The previous prime is 664635000737. The next prime is 664635000791. The reversal of 664635000788 is 887000536466.

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 15 ways as a sum of consecutive naturals, for example, 28066193 + ... + 28089863.

It is an arithmetic number, because the mean of its divisors is an integer number (26515954080).

Almost surely, 2^664635000788 is an apocalyptic number.

It is an amenable number.

664635000788 is a deficient number, since it is larger than the sum of its proper divisors (608130795052).

664635000788 is a wasteful number, since it uses less digits than its factorization.

664635000788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25628 (or 25626 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 664635000788 in words is "six hundred sixty-four billion, six hundred thirty-five million, seven hundred eighty-eight", and thus it is an aban number.