9867880 has 64 divisors (see below), whose sum is σ = 24857280. Its totient is φ = 3494400.

The previous prime is 9867853. The next prime is 9867883. The reversal of 9867880 is 887689.

It is a self number, because there is not a number n which added to its sum of digits gives 9867880.

It is not an unprimeable number, because it can be changed into a prime (9867883) 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, 17767 + ... + 18313.

It is an arithmetic number, because the mean of its divisors is an integer number (388395).

Almost surely, 2^9867880 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 9867880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12428640).

9867880 is an abundant number, since it is smaller than the sum of its proper divisors (14989400).

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

9867880 is a wasteful number, since it uses less digits than its factorization.

9867880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 9867880 is about 3141.3181946438. The cubic root of 9867880 is about 214.4904464496.

The spelling of 9867880 in words is "nine million, eight hundred sixty-seven thousand, eight hundred eighty".