6644635104 has 48 divisors (see below), whose sum is σ = 17449547472. Its totient is φ = 2213941248.

The previous prime is 6644635093. The next prime is 6644635133. The reversal of 6644635104 is 4015364466.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 235582 + ... + 262274.

It is an arithmetic number, because the mean of its divisors is an integer number (363532239).

Almost surely, 2^6644635104 is an apocalyptic number.

It is an amenable number.

6644635104 is an abundant number, since it is smaller than the sum of its proper divisors (10804912368).

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

6644635104 is a wasteful number, since it uses less digits than its factorization.

6644635104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29299 (or 29291 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 6644635104 is about 81514.6312265473. The cubic root of 6644635104 is about 1879.9965202893.

The spelling of 6644635104 in words is "six billion, six hundred forty-four million, six hundred thirty-five thousand, one hundred four".