6643304052 has 96 divisors (see below), whose sum is σ = 19342095360. Its totient is φ = 1724094720.

The previous prime is 6643304051. The next prime is 6643304053. The reversal of 6643304052 is 2504033466.

It is an interprime number because it is at equal distance from previous prime (6643304051) and next prime (6643304053).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6643304051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1528899 + ... + 1533237.

It is an arithmetic number, because the mean of its divisors is an integer number (201480160).

Almost surely, 2^6643304052 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 6643304052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9671047680).

6643304052 is an abundant number, since it is smaller than the sum of its proper divisors (12698791308).

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

6643304052 is a wasteful number, since it uses less digits than its factorization.

6643304052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021 (or 6019 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 6643304052 is about 81506.4663201638. The cubic root of 6643304052 is about 1879.8709783948.

The spelling of 6643304052 in words is "six billion, six hundred forty-three million, three hundred four thousand, fifty-two".