8688213 has 6 divisors (see below), whose sum is σ = 12549654. Its totient is φ = 5792136.

The previous prime is 8688209. The next prime is 8688221. The reversal of 8688213 is 3128868.

8688213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7800849 + 887364 = 2793^2 + 942^2 .

It is not a de Polignac number, because 8688213 - 2² = 8688209 is a prime.

8688213 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8688203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 482670 + ... + 482687.

It is an arithmetic number, because the mean of its divisors is an integer number (2091609).

Almost surely, 2^8688213 is an apocalyptic number.

It is an amenable number.

8688213 is a deficient number, since it is larger than the sum of its proper divisors (3861441).

8688213 is a wasteful number, since it uses less digits than its factorization.

8688213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965363 (or 965360 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 8688213 is about 2947.5774798977. The cubic root of 8688213 is about 205.5780867221.

The spelling of 8688213 in words is "eight million, six hundred eighty-eight thousand, two hundred thirteen".