8666709000 has 128 divisors (see below), whose sum is σ = 27308810880. Its totient is φ = 2288160000.

The previous prime is 8666708969. The next prime is 8666709019. The reversal of 8666709000 is 9076668.

It is a happy number.

It is a super-2 number, since 2×8666709000² (a number of 21 digits) contains 22 as substring.

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, 288699 + ... + 317301.

It is an arithmetic number, because the mean of its divisors is an integer number (213350085).

Almost surely, 2^8666709000 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 8666709000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13654405440).

8666709000 is an abundant number, since it is smaller than the sum of its proper divisors (18642101880).

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

8666709000 is a wasteful number, since it uses less digits than its factorization.

8666709000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28728 (or 28714 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 8666709000 is about 93095.1609913211. The cubic root of 8666709000 is about 2054.0833937079.

The spelling of 8666709000 in words is "eight billion, six hundred sixty-six million, seven hundred nine thousand".