7663998228 has 12 divisors (see below), whose sum is σ = 17882662560. Its totient is φ = 2554666072.

The previous prime is 7663998217. The next prime is 7663998253. The reversal of 7663998228 is 8228993667.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319333248 + ... + 319333271.

It is an arithmetic number, because the mean of its divisors is an integer number (1490221880).

Almost surely, 2^7663998228 is an apocalyptic number.

It is an amenable number.

7663998228 is an abundant number, since it is smaller than the sum of its proper divisors (10218664332).

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

7663998228 is a wasteful number, since it uses less digits than its factorization.

7663998228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638666526 (or 638666524 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 60.

The square root of 7663998228 is about 87544.2643923632. The cubic root of 7663998228 is about 1971.5984371201.

The spelling of 7663998228 in words is "seven billion, six hundred sixty-three million, nine hundred ninety-eight thousand, two hundred twenty-eight".