6630440212 has 96 divisors (see below), whose sum is σ = 13335404544. Its totient is φ = 2857814400.

The previous prime is 6630440209. The next prime is 6630440213. The reversal of 6630440212 is 2120440366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6630440213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15383637 + ... + 15384067.

It is an arithmetic number, because the mean of its divisors is an integer number (138910464).

Almost surely, 2^6630440212 is an apocalyptic number.

It is an amenable number.

6630440212 is an abundant number, since it is smaller than the sum of its proper divisors (6704964332).

6630440212 is a wasteful number, since it uses less digits than its factorization.

6630440212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 6630440212 is about 81427.5150793637. The cubic root of 6630440212 is about 1878.6568242776.

Adding to 6630440212 its reverse (2120440366), we get a palindrome (8750880578).

The spelling of 6630440212 in words is "six billion, six hundred thirty million, four hundred forty thousand, two hundred twelve".