8681218 has 16 divisors (see below), whose sum is σ = 16027200. Its totient is φ = 3434256.

The previous prime is 8681213. The next prime is 8681221. The reversal of 8681218 is 8121868.

It is not an unprimeable number, because it can be changed into a prime (8681213) 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, 23668 + ... + 24031.

It is an arithmetic number, because the mean of its divisors is an integer number (1001700).

Almost surely, 2^8681218 is an apocalyptic number.

8681218 is a deficient number, since it is larger than the sum of its proper divisors (7345982).

8681218 is a wasteful number, since it uses less digits than its factorization.

8681218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47721.

The product of its digits is 6144, while the sum is 34.

The square root of 8681218 is about 2946.3906733493. The cubic root of 8681218 is about 205.5229006591.

The spelling of 8681218 in words is "eight million, six hundred eighty-one thousand, two hundred eighteen".