9878687 has 8 divisors (see below), whose sum is σ = 12158496. Its totient is φ = 7816032.

The previous prime is 9878657. The next prime is 9878731. The reversal of 9878687 is 7868789.

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

It is not a de Polignac number, because 9878687 - 2¹⁶ = 9813151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54188 + ... + 54369.

It is an arithmetic number, because the mean of its divisors is an integer number (1519812).

Almost surely, 2^9878687 is an apocalyptic number.

9878687 is a deficient number, since it is larger than the sum of its proper divisors (2279809).

9878687 is a wasteful number, since it uses less digits than its factorization.

9878687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108577.

The product of its digits is 1354752, while the sum is 53.

The square root of 9878687 is about 3143.0378616873. The cubic root of 9878687 is about 214.5687190055.

The spelling of 9878687 in words is "nine million, eight hundred seventy-eight thousand, six hundred eighty-seven".