6628228266 has 64 divisors (see below), whose sum is σ = 14615943552. Its totient is φ = 2003760000.

The previous prime is 6628228259. The next prime is 6628228273.

6628228266 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (6628228259) and next prime (6628228273).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4798896 + ... + 4800276.

It is an arithmetic number, because the mean of its divisors is an integer number (228374118).

Almost surely, 2^6628228266 is an apocalyptic number.

6628228266 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6628228266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7307971776).

6628228266 is an abundant number, since it is smaller than the sum of its proper divisors (7987715286).

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

6628228266 is a wasteful number, since it uses less digits than its factorization.

6628228266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020 (or 1998 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 48.

The square root of 6628228266 is about 81413.9316456342. The cubic root of 6628228266 is about 1878.4478914619.

The spelling of 6628228266 in words is "six billion, six hundred twenty-eight million, two hundred twenty-eight thousand, two hundred sixty-six".