6628688806 has 32 divisors (see below), whose sum is σ = 10200153600. Its totient is φ = 3230067456.

The previous prime is 6628688797. The next prime is 6628688809. The reversal of 6628688806 is 6088868266.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6628688809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3975585 + ... + 3977251.

It is an arithmetic number, because the mean of its divisors is an integer number (318754800).

Almost surely, 2^6628688806 is an apocalyptic number.

6628688806 is a deficient number, since it is larger than the sum of its proper divisors (3571464794).

6628688806 is a wasteful number, since it uses less digits than its factorization.

6628688806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068.

The product of its (nonzero) digits is 10616832, while the sum is 58.

The square root of 6628688806 is about 81416.7599822051. The cubic root of 6628688806 is about 1878.4913963182.

The spelling of 6628688806 in words is "six billion, six hundred twenty-eight million, six hundred eighty-eight thousand, eight hundred six".