9081681 has 16 divisors (see below), whose sum is σ = 14035968. Its totient is φ = 5115600.

The previous prime is 9081661. The next prime is 9081703. The reversal of 9081681 is 1861809.

9081681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9081681 - 2¹⁰ = 9080657 is a prime.

It is a super-2 number, since 2×9081681² = 164953859571522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9081661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1555 + ... + 4536.

It is an arithmetic number, because the mean of its divisors is an integer number (877248).

Almost surely, 2^9081681 is an apocalyptic number.

It is an amenable number.

9081681 is a deficient number, since it is larger than the sum of its proper divisors (4954287).

9081681 is a wasteful number, since it uses less digits than its factorization.

9081681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 9081681 is about 3013.5827514771. The cubic root of 9081681 is about 208.6357597401.

The spelling of 9081681 in words is "nine million, eighty-one thousand, six hundred eighty-one".