6636140 has 48 divisors (see below), whose sum is σ = 16111872. Its totient is φ = 2248896.

The previous prime is 6636127. The next prime is 6636169. The reversal of 6636140 is 416366.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14759 + ... + 15201.

It is an arithmetic number, because the mean of its divisors is an integer number (335664).

Almost surely, 2^6636140 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 6636140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8055936).

6636140 is an abundant number, since it is smaller than the sum of its proper divisors (9475732).

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

6636140 is a wasteful number, since it uses less digits than its factorization.

6636140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 6636140 is about 2576.0706512050. The cubic root of 6636140 is about 187.9194992605.

It can be divided in two parts, 6636 and 140, that added together give a palindrome (6776).

The spelling of 6636140 in words is "six million, six hundred thirty-six thousand, one hundred forty".