5644923648 has 432 divisors, whose sum is σ = 19326101760. Its totient is φ = 1423982592.

The previous prime is 5644923623. The next prime is 5644923659. The reversal of 5644923648 is 8463294465.

It is a self number, because there is not a number n which added to its sum of digits gives 5644923648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95676643 + ... + 95676701.

Almost surely, 2^5644923648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5644923648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9663050880).

5644923648 is an abundant number, since it is smaller than the sum of its proper divisors (13681178112).

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

5644923648 is a wasteful number, since it uses less digits than its factorization.

5644923648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 121 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 51.

The square root of 5644923648 is about 75132.7069125025. The cubic root of 5644923648 is about 1780.5439199602.

The spelling of 5644923648 in words is "five billion, six hundred forty-four million, nine hundred twenty-three thousand, six hundred forty-eight".