8500213 has 2 divisors, whose sum is σ = 8500214. Its totient is φ = 8500212.

The previous prime is 8500211. The next prime is 8500229. The reversal of 8500213 is 3120058.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5866084 + 2634129 = 2422^2 + 1623^2 .

It is a cyclic number.

It is not a de Polignac number, because 8500213 - 2¹ = 8500211 is a prime.

Together with 8500211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8500211) 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 as a sum of consecutive naturals, namely, 4250106 + 4250107.

It is an arithmetic number, because the mean of its divisors is an integer number (4250107).

Almost surely, 2^8500213 is an apocalyptic number.

It is an amenable number.

8500213 is a deficient number, since it is larger than the sum of its proper divisors (1).

8500213 is an equidigital number, since it uses as much as digits as its factorization.

8500213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 8500213 is about 2915.5124763924. The cubic root of 8500213 is about 204.0844597729.

The spelling of 8500213 in words is "eight million, five hundred thousand, two hundred thirteen".