8237213 has 2 divisors, whose sum is σ = 8237214. Its totient is φ = 8237212.

The previous prime is 8237191. The next prime is 8237237. The reversal of 8237213 is 3127328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7963684 + 273529 = 2822^2 + 523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8237213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8237263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4118606 + 4118607.

It is an arithmetic number, because the mean of its divisors is an integer number (4118607).

Almost surely, 2^8237213 is an apocalyptic number.

It is an amenable number.

8237213 is a deficient number, since it is larger than the sum of its proper divisors (1).

8237213 is an equidigital number, since it uses as much as digits as its factorization.

8237213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 8237213 is about 2870.0545290987. The cubic root of 8237213 is about 201.9575524310.

The spelling of 8237213 in words is "eight million, two hundred thirty-seven thousand, two hundred thirteen".