6366220213 has 2 divisors, whose sum is σ = 6366220214. Its totient is φ = 6366220212.

The previous prime is 6366220169. The next prime is 6366220229. The reversal of 6366220213 is 3120226636.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5161991409 + 1204228804 = 71847^2 + 34702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6366220213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6366220243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3183110106 + 3183110107.

It is an arithmetic number, because the mean of its divisors is an integer number (3183110107).

Almost surely, 2^6366220213 is an apocalyptic number.

It is an amenable number.

6366220213 is a deficient number, since it is larger than the sum of its proper divisors (1).

6366220213 is an equidigital number, since it uses as much as digits as its factorization.

6366220213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 6366220213 is about 79788.5970111018. The cubic root of 6366220213 is about 1853.3632720314.

Adding to 6366220213 its reverse (3120226636), we get a palindrome (9486446849).

The spelling of 6366220213 in words is "six billion, three hundred sixty-six million, two hundred twenty thousand, two hundred thirteen".