8668278066 has 96 divisors (see below), whose sum is σ = 20802355200. Its totient is φ = 2399562144.

The previous prime is 8668278061. The next prime is 8668278079. The reversal of 8668278066 is 6608728668.

It is a junction number, because it is equal to n+sod(n) for n = 8668277997 and 8668278015.

It is not an unprimeable number, because it can be changed into a prime (8668278061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1602835 + ... + 1608233.

It is an arithmetic number, because the mean of its divisors is an integer number (216691200).

Almost surely, 2^8668278066 is an apocalyptic number.

8668278066 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 8668278066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10401177600).

8668278066 is an abundant number, since it is smaller than the sum of its proper divisors (12134077134).

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

8668278066 is a wasteful number, since it uses less digits than its factorization.

8668278066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5588 (or 5581 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 57.

The square root of 8668278066 is about 93103.5878256042. The cubic root of 8668278066 is about 2054.2073468690.

The spelling of 8668278066 in words is "eight billion, six hundred sixty-eight million, two hundred seventy-eight thousand, sixty-six".