9163681 has 8 divisors (see below), whose sum is σ = 9979200. Its totient is φ = 8381520.

The previous prime is 9163639. The next prime is 9163699. The reversal of 9163681 is 1863619.

9163681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9163681 - 2⁹ = 9163169 is a prime.

It is a super-2 number, since 2×9163681² = 167946098939522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9163621) 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, 7765 + ... + 8866.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^9163681 is an apocalyptic number.

It is an amenable number.

9163681 is a deficient number, since it is larger than the sum of its proper divisors (815519).

9163681 is a wasteful number, since it uses less digits than its factorization.

9163681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16679.

The product of its digits is 7776, while the sum is 34.

The square root of 9163681 is about 3027.1572473197. The cubic root of 9163681 is about 209.2618148476.

The spelling of 9163681 in words is "nine million, one hundred sixty-three thousand, six hundred eighty-one".