6947845613 has 2 divisors, whose sum is σ = 6947845614. Its totient is φ = 6947845612.

The previous prime is 6947845601. The next prime is 6947845657. The reversal of 6947845613 is 3165487496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4128448009 + 2819397604 = 64253^2 + 53098^2 .

It is a cyclic number.

It is not a de Polignac number, because 6947845613 - 2¹⁸ = 6947583469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6947845913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3473922806 + 3473922807.

It is an arithmetic number, because the mean of its divisors is an integer number (3473922807).

Almost surely, 2^6947845613 is an apocalyptic number.

It is an amenable number.

6947845613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6947845613 is an equidigital number, since it uses as much as digits as its factorization.

6947845613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 53.

The square root of 6947845613 is about 83353.7378466017. The cubic root of 6947845613 is about 1908.1684893737.

The spelling of 6947845613 in words is "six billion, nine hundred forty-seven million, eight hundred forty-five thousand, six hundred thirteen".