5643001664 has 56 divisors (see below), whose sum is σ = 11574780000. Its totient is φ = 2728097280.

The previous prime is 5643001649. The next prime is 5643001733. The reversal of 5643001664 is 4661003465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218087 + ... + 242585.

It is an arithmetic number, because the mean of its divisors is an integer number (206692500).

Almost surely, 2^5643001664 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 5643001664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5787390000).

5643001664 is an abundant number, since it is smaller than the sum of its proper divisors (5931778336).

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

5643001664 is a wasteful number, since it uses less digits than its factorization.

5643001664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24631 (or 24621 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 5643001664 is about 75119.9152289192. The cubic root of 5643001664 is about 1780.3418171149.

The spelling of 5643001664 in words is "five billion, six hundred forty-three million, one thousand, six hundred sixty-four".