9878681 has 8 divisors (see below), whose sum is σ = 10080864. Its totient is φ = 9678240.

The previous prime is 9878657. The next prime is 9878731. The reversal of 9878681 is 1868789.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9878681 is a prime.

It is a super-2 number, since 2×9878681² = 195176676599522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9878611) 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 7 ways as a sum of consecutive naturals, for example, 18701 + ... + 19221.

It is an arithmetic number, because the mean of its divisors is an integer number (1260108).

Almost surely, 2^9878681 is an apocalyptic number.

It is an amenable number.

9878681 is a deficient number, since it is larger than the sum of its proper divisors (202183).

9878681 is a wasteful number, since it uses less digits than its factorization.

9878681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its digits is 193536, while the sum is 47.

The square root of 9878681 is about 3143.0369071966. The cubic root of 9878681 is about 214.5686755648.

The spelling of 9878681 in words is "nine million, eight hundred seventy-eight thousand, six hundred eighty-one".