6636680 has 32 divisors (see below), whose sum is σ = 15120000. Its totient is φ = 2621376.

The previous prime is 6636667. The next prime is 6636689. The reversal of 6636680 is 866366.

It is a self number, because there is not a number n which added to its sum of digits gives 6636680.

It is not an unprimeable number, because it can be changed into a prime (6636689) 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, 2321 + ... + 4319.

It is an arithmetic number, because the mean of its divisors is an integer number (472500).

Almost surely, 2^6636680 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 6636680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7560000).

6636680 is an abundant number, since it is smaller than the sum of its proper divisors (8483320).

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

6636680 is a wasteful number, since it uses less digits than its factorization.

6636680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093 (or 2089 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 6636680 is about 2576.1754598629. The cubic root of 6636680 is about 187.9245962887.

The spelling of 6636680 in words is "six million, six hundred thirty-six thousand, six hundred eighty".