8669779668 has 72 divisors (see below), whose sum is σ = 24027931200. Its totient is φ = 2613980160.

The previous prime is 8669779661. The next prime is 8669779687.

8669779668 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 8669779596 and 8669779605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8669779661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23796 + ... + 133812.

Almost surely, 2^8669779668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8669779668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12013965600).

8669779668 is an abundant number, since it is smaller than the sum of its proper divisors (15358151532).

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

8669779668 is a wasteful number, since it uses less digits than its factorization.

8669779668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110237 (or 110232 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 72.

The square root of 8669779668 is about 93111.6516231991. The cubic root of 8669779668 is about 2054.3259564990.

The spelling of 8669779668 in words is "eight billion, six hundred sixty-nine million, seven hundred seventy-nine thousand, six hundred sixty-eight".