6636128 has 24 divisors (see below), whose sum is σ = 13517280. Its totient is φ = 3203200.

The previous prime is 6636127. The next prime is 6636169. The reversal of 6636128 is 8216366.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 6636094 and 6636103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636127) 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, 2648 + ... + 4503.

It is an arithmetic number, because the mean of its divisors is an integer number (563220).

Almost surely, 2^6636128 is an apocalyptic number.

It is an amenable number.

6636128 is an abundant number, since it is smaller than the sum of its proper divisors (6881152).

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

6636128 is a wasteful number, since it uses less digits than its factorization.

6636128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190 (or 7182 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 6636128 is about 2576.0683220753. The cubic root of 6636128 is about 187.9193859901.

The spelling of 6636128 in words is "six million, six hundred thirty-six thousand, one hundred twenty-eight".