9686881 has 4 divisors (see below), whose sum is σ = 9819652. Its totient is φ = 9554112.

The previous prime is 9686879. The next prime is 9686921. The reversal of 9686881 is 1886869.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1846881 + 7840000 = 1359^2 + 2800^2 .

It is a cyclic number.

It is not a de Polignac number, because 9686881 - 2¹ = 9686879 is a prime.

It is a super-2 number, since 2×9686881² = 187671327016322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9686851) 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, 66276 + ... + 66421.

It is an arithmetic number, because the mean of its divisors is an integer number (2454913).

Almost surely, 2^9686881 is an apocalyptic number.

It is an amenable number.

9686881 is a deficient number, since it is larger than the sum of its proper divisors (132771).

9686881 is a wasteful number, since it uses less digits than its factorization.

9686881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132770.

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

The square root of 9686881 is about 3112.3754593558. The cubic root of 9686881 is about 213.1709340769.

The spelling of 9686881 in words is "nine million, six hundred eighty-six thousand, eight hundred eighty-one".