8671647880 has 128 divisors (see below), whose sum is σ = 23592960000. Its totient is φ = 2802159360.

The previous prime is 8671647877. The next prime is 8671647953. The reversal of 8671647880 is 887461768.

It is a happy number.

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, 1054585 + ... + 1062775.

It is an arithmetic number, because the mean of its divisors is an integer number (184320000).

Almost surely, 2^8671647880 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 8671647880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11796480000).

8671647880 is an abundant number, since it is smaller than the sum of its proper divisors (14921312120).

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

8671647880 is a wasteful number, since it uses less digits than its factorization.

8671647880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8427 (or 8423 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 55.

The square root of 8671647880 is about 93121.6831892551. The cubic root of 8671647880 is about 2054.4735050686.

The spelling of 8671647880 in words is "eight billion, six hundred seventy-one million, six hundred forty-seven thousand, eight hundred eighty".