987875866 has 8 divisors (see below), whose sum is σ = 1487448864. Its totient is φ = 492059580.

The previous prime is 987875857. The next prime is 987875887. The reversal of 987875866 is 668578789.

987875866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 987875798 and 987875807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938520 + ... + 939571.

It is an arithmetic number, because the mean of its divisors is an integer number (185931108).

Almost surely, 2^987875866 is an apocalyptic number.

987875866 is a deficient number, since it is larger than the sum of its proper divisors (499572998).

987875866 is a wasteful number, since it uses less digits than its factorization.

987875866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878356.

The product of its digits is 40642560, while the sum is 64.

The square root of 987875866 is about 31430.4926146569. The cubic root of 987875866 is about 995.9421783554.

It can be divided in two parts, 98787 and 5866, that added together give a triangular number (104653 = T₄₅₇).

The spelling of 987875866 in words is "nine hundred eighty-seven million, eight hundred seventy-five thousand, eight hundred sixty-six".