987680 has 24 divisors (see below), whose sum is σ = 2333772. Its totient is φ = 395008.

The previous prime is 987659. The next prime is 987697. The reversal of 987680 is 86789.

It can be written as a sum of positive squares in 2 ways, for example, as 824464 + 163216 = 908^2 + 404^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2927 + ... + 3246.

2⁹⁸⁷⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

987680 is an abundant number, since it is smaller than the sum of its proper divisors (1346092).

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

987680 is a wasteful number, since it uses less digits than its factorization.

987680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188 (or 6180 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 987680 is about 993.8209094198. The cubic root of 987680 is about 99.5876352236.

The spelling of 987680 in words is "nine hundred eighty-seven thousand, six hundred eighty".