9868681 has 4 divisors (see below), whose sum is σ = 9915664. Its totient is φ = 9821700.

The previous prime is 9868643. The next prime is 9868693. The reversal of 9868681 is 1868689.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1868689 = 1367².

It is a cyclic number.

It is not a de Polignac number, because 9868681 - 2⁷ = 9868553 is a prime.

It is a super-2 number, since 2×9868681² = 194781729359522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9868181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23175 + ... + 23596.

It is an arithmetic number, because the mean of its divisors is an integer number (2478916).

Almost surely, 2^9868681 is an apocalyptic number.

It is an amenable number.

9868681 is a deficient number, since it is larger than the sum of its proper divisors (46983).

9868681 is a wasteful number, since it uses less digits than its factorization.

9868681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46982.

The product of its digits is 165888, while the sum is 46.

The square root of 9868681 is about 3141.4456863043. The cubic root of 9868681 is about 214.4962498643.

The spelling of 9868681 in words is "nine million, eight hundred sixty-eight thousand, six hundred eighty-one".