8663980 has 48 divisors (see below), whose sum is σ = 20039040. Its totient is φ = 3126528.

The previous prime is 8663969. The next prime is 8663987. The reversal of 8663980 is 893668.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8663987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11866 + ... + 12574.

It is an arithmetic number, because the mean of its divisors is an integer number (417480).

Almost surely, 2^8663980 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 8663980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10019520).

8663980 is an abundant number, since it is smaller than the sum of its proper divisors (11375060).

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

8663980 is a wasteful number, since it uses less digits than its factorization.

8663980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 776 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 8663980 is about 2943.4639457619. The cubic root of 8663980 is about 205.3867772374.

The spelling of 8663980 in words is "eight million, six hundred sixty-three thousand, nine hundred eighty".