8623213 has 2 divisors, whose sum is σ = 8623214. Its totient is φ = 8623212.

The previous prime is 8623193. The next prime is 8623247. The reversal of 8623213 is 3123268.

8623213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4571044 + 4052169 = 2138^2 + 2013^2 .

It is a cyclic number.

It is not a de Polignac number, because 8623213 - 2²¹ = 6526061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8623253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4311606 + 4311607.

It is an arithmetic number, because the mean of its divisors is an integer number (4311607).

Almost surely, 2^8623213 is an apocalyptic number.

It is an amenable number.

8623213 is a deficient number, since it is larger than the sum of its proper divisors (1).

8623213 is an equidigital number, since it uses as much as digits as its factorization.

8623213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 8623213 is about 2936.5307762733. The cubic root of 8623213 is about 205.0641322251.

Subtracting from 8623213 its reverse (3123268), we obtain a palindrome (5499945).

It can be divided in two parts, 8623 and 213, that added together give a square (8836 = 94²).

The spelling of 8623213 in words is "eight million, six hundred twenty-three thousand, two hundred thirteen".