987687 has 16 divisors (see below), whose sum is σ = 1478880. Its totient is φ = 651456.

The previous prime is 987659. The next prime is 987697. The reversal of 987687 is 786789.

987687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 987687 - 2⁷ = 987559 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987607) 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, 4123 + ... + 4355.

It is an arithmetic number, because the mean of its divisors is an integer number (92430).

2⁹⁸⁷⁶⁸⁷ is an apocalyptic number.

987687 is a deficient number, since it is larger than the sum of its proper divisors (491193).

987687 is a wasteful number, since it uses less digits than its factorization.

987687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 393 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 987687 is about 993.8244311748. The cubic root of 987687 is about 99.5878704927.

The spelling of 987687 in words is "nine hundred eighty-seven thousand, six hundred eighty-seven".