6213240613 has 2 divisors, whose sum is σ = 6213240614. Its totient is φ = 6213240612.

The previous prime is 6213240599. The next prime is 6213240629. The reversal of 6213240613 is 3160423126.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6212907684 + 332929 = 78822^2 + 577^2 .

It is a cyclic number.

It is not a de Polignac number, because 6213240613 - 2⁹ = 6213240101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6213240113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3106620306 + 3106620307.

It is an arithmetic number, because the mean of its divisors is an integer number (3106620307).

Almost surely, 2^6213240613 is an apocalyptic number.

It is an amenable number.

6213240613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6213240613 is an equidigital number, since it uses as much as digits as its factorization.

6213240613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 6213240613 is about 78824.1118757452. Note that the first 3 decimals coincide. The cubic root of 6213240613 is about 1838.3973731369.

Adding to 6213240613 its reverse (3160423126), we get a palindrome (9373663739).

The spelling of 6213240613 in words is "six billion, two hundred thirteen million, two hundred forty thousand, six hundred thirteen".