8681121 has 16 divisors (see below), whose sum is σ = 13305600. Its totient is φ = 5587344.

The previous prime is 8681117. The next prime is 8681129. The reversal of 8681121 is 1211868.

It is not a de Polignac number, because 8681121 - 2² = 8681117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

8681121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8681129) 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, 4761 + ... + 6326.

It is an arithmetic number, because the mean of its divisors is an integer number (831600).

Almost surely, 2^8681121 is an apocalyptic number.

It is an amenable number.

8681121 is a deficient number, since it is larger than the sum of its proper divisors (4624479).

8681121 is a wasteful number, since it uses less digits than its factorization.

8681121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11125 (or 11119 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 8681121 is about 2946.3742124856. The cubic root of 8681121 is about 205.5221351829.

Adding to 8681121 its reverse (1211868), we get a palindrome (9892989).

The spelling of 8681121 in words is "eight million, six hundred eighty-one thousand, one hundred twenty-one".