6989522228 has 24 divisors (see below), whose sum is σ = 13214947200. Its totient is φ = 3215553120.

The previous prime is 6989522149. The next prime is 6989522249. The reversal of 6989522228 is 8222259896.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6989522228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199928 + ... + 232271.

It is an arithmetic number, because the mean of its divisors is an integer number (550622800).

Almost surely, 2^6989522228 is an apocalyptic number.

It is an amenable number.

6989522228 is a deficient number, since it is larger than the sum of its proper divisors (6225424972).

6989522228 is a wasteful number, since it uses less digits than its factorization.

6989522228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432527 (or 432525 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 53.

The square root of 6989522228 is about 83603.3625400318. The cubic root of 6989522228 is about 1911.9762653666.

The spelling of 6989522228 in words is "six billion, nine hundred eighty-nine million, five hundred twenty-two thousand, two hundred twenty-eight".