8666768990 has 24 divisors (see below), whose sum is σ = 17147312280. Its totient is φ = 3151551920.

The previous prime is 8666768917. The next prime is 8666769011. The reversal of 8666768990 is 998676668.

It is a super-2 number, since 2×8666768990² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3580100 + ... + 3582519.

It is an arithmetic number, because the mean of its divisors is an integer number (714471345).

Almost surely, 2^8666768990 is an apocalyptic number.

8666768990 is a deficient number, since it is larger than the sum of its proper divisors (8480543290).

8666768990 is a wasteful number, since it uses less digits than its factorization.

8666768990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162648 (or 7162637 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 65.

The square root of 8666768990 is about 93095.4831879614. The cubic root of 8666768990 is about 2054.0881330762.

The spelling of 8666768990 in words is "eight billion, six hundred sixty-six million, seven hundred sixty-eight thousand, nine hundred ninety".