664583612244 has 24 divisors (see below), whose sum is σ = 1550777238528. Its totient is φ = 221516136000.

The previous prime is 664583612233. The next prime is 664583612269. The reversal of 664583612244 is 442216385466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229332 + ... + 1685355.

It is an arithmetic number, because the mean of its divisors is an integer number (64615718272).

Almost surely, 2^664583612244 is an apocalyptic number.

It is an amenable number.

664583612244 is an abundant number, since it is smaller than the sum of its proper divisors (886193626284).

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

664583612244 is a wasteful number, since it uses less digits than its factorization.

664583612244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933695 (or 2933693 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 51.

The spelling of 664583612244 in words is "six hundred sixty-four billion, five hundred eighty-three million, six hundred twelve thousand, two hundred forty-four".