6636928 has 32 divisors (see below), whose sum is σ = 13923000. Its totient is φ = 3142656.

The previous prime is 6636923. The next prime is 6636937. The reversal of 6636928 is 8296366.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068 + ... + 3796.

Almost surely, 2^6636928 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 6636928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6961500).

6636928 is an abundant number, since it is smaller than the sum of its proper divisors (7286072).

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

6636928 is a wasteful number, since it uses less digits than its factorization.

6636928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762 (or 2750 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 6636928 is about 2576.2235927807. The cubic root of 6636928 is about 187.9269370534.

The spelling of 6636928 in words is "six million, six hundred thirty-six thousand, nine hundred twenty-eight".