6636616 has 32 divisors (see below), whose sum is σ = 14610240. Its totient is φ = 2766528.

The previous prime is 6636611. The next prime is 6636661. The reversal of 6636616 is 6166366.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6636611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471 + ... + 3673.

It is an arithmetic number, because the mean of its divisors is an integer number (456570).

Almost surely, 2^6636616 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 6636616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7305120).

6636616 is an abundant number, since it is smaller than the sum of its proper divisors (7973624).

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

6636616 is a wasteful number, since it uses less digits than its factorization.

6636616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253 (or 3249 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 6636616 is about 2576.1630383188. The cubic root of 6636616 is about 187.9239922109.

The spelling of 6636616 in words is "six million, six hundred thirty-six thousand, six hundred sixteen".