8213605 has 16 divisors (see below), whose sum is σ = 10713600. Its totient is φ = 6022080.

The previous prime is 8213603. The next prime is 8213627. The reversal of 8213605 is 5063128.

It is a happy number.

It is not a de Polignac number, because 8213605 - 2¹ = 8213603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8213605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1551 + ... + 4339.

It is an arithmetic number, because the mean of its divisors is an integer number (669600).

Almost surely, 2^8213605 is an apocalyptic number.

It is an amenable number.

8213605 is a deficient number, since it is larger than the sum of its proper divisors (2499995).

8213605 is a wasteful number, since it uses less digits than its factorization.

8213605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 8213605 is about 2865.9387641748. The cubic root of 8213605 is about 201.7644298282.

The spelling of 8213605 in words is "eight million, two hundred thirteen thousand, six hundred five".