6644004200 has 48 divisors (see below), whose sum is σ = 15456992460. Its totient is φ = 2655936000.

The previous prime is 6644004193. The next prime is 6644004217. The reversal of 6644004200 is 24004466.

It can be written as a sum of positive squares in 6 ways, for example, as 49589764 + 6594414436 = 7042^2 + 81206^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6644004200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338660 + ... + 357740.

Almost surely, 2^6644004200 is an apocalyptic number.

It is an amenable number.

6644004200 is an abundant number, since it is smaller than the sum of its proper divisors (8812988260).

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

6644004200 is a wasteful number, since it uses less digits than its factorization.

6644004200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20838 (or 20829 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 6644004200 is about 81510.7612527328. The cubic root of 6644004200 is about 1879.9370169031.

Adding to 6644004200 its reverse (24004466), we get a palindrome (6668008666).

The spelling of 6644004200 in words is "six billion, six hundred forty-four million, four thousand, two hundred".