9872687 has 4 divisors (see below), whose sum is σ = 10770216. Its totient is φ = 8975160.

The previous prime is 9872683. The next prime is 9872693. The reversal of 9872687 is 7862789.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9872687 - 2² = 9872683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448748 + ... + 448769.

It is an arithmetic number, because the mean of its divisors is an integer number (2692554).

Almost surely, 2^9872687 is an apocalyptic number.

9872687 is a deficient number, since it is larger than the sum of its proper divisors (897529).

9872687 is a wasteful number, since it uses less digits than its factorization.

9872687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897528.

The product of its digits is 338688, while the sum is 47.

The square root of 9872687 is about 3142.0832261415. The cubic root of 9872687 is about 214.5252694713.

The spelling of 9872687 in words is "nine million, eight hundred seventy-two thousand, six hundred eighty-seven".