6613437613 has 2 divisors, whose sum is σ = 6613437614. Its totient is φ = 6613437612.

The previous prime is 6613437587. The next prime is 6613437653. The reversal of 6613437613 is 3167343166.

It is an a-pointer prime, because the next prime (6613437653) can be obtained adding 6613437613 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6131986249 + 481451364 = 78307^2 + 21942^2 .

It is a cyclic number.

It is not a de Polignac number, because 6613437613 - 2⁹ = 6613437101 is a prime.

It is a super-2 number, since 2×6613437613² = 87475114122086275538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6613437653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3306718806 + 3306718807.

It is an arithmetic number, because the mean of its divisors is an integer number (3306718807).

Almost surely, 2^6613437613 is an apocalyptic number.

It is an amenable number.

6613437613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6613437613 is an equidigital number, since it uses as much as digits as its factorization.

6613437613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 40.

The square root of 6613437613 is about 81323.0447843660. The cubic root of 6613437613 is about 1877.0496212443.

The spelling of 6613437613 in words is "six billion, six hundred thirteen million, four hundred thirty-seven thousand, six hundred thirteen".