987880 has 16 divisors (see below), whose sum is σ = 2222820. Its totient is φ = 395136.

The previous prime is 987869. The next prime is 987911. The reversal of 987880 is 88789.

987880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 948676 + 39204 = 974^2 + 198^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 24697 = 987880 / (9 + 8 + 7 + 8 + 8 + 0).

It is an Ulam number.

It is an unprimeable number.

987880 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12309 + ... + 12388.

2⁹⁸⁷⁸⁸⁰ is an apocalyptic number.

It is an amenable number.

987880 is an abundant number, since it is smaller than the sum of its proper divisors (1234940).

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

987880 is a wasteful number, since it uses less digits than its factorization.

987880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24708 (or 24704 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 987880 is about 993.9215260774. The cubic root of 987880 is about 99.5943567605.

The spelling of 987880 in words is "nine hundred eighty-seven thousand, eight hundred eighty".