6878313613 has 2 divisors, whose sum is σ = 6878313614. Its totient is φ = 6878313612.

The previous prime is 6878313581. The next prime is 6878313643. The reversal of 6878313613 is 3163138786.

6878313613 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5896243369 + 982070244 = 76787^2 + 31338^2 .

It is a cyclic number.

It is not a de Polignac number, because 6878313613 - 2⁵ = 6878313581 is a prime.

It is a super-2 number, since 2×6878313613² = 94622396317562227538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6878313643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439156806 + 3439156807.

It is an arithmetic number, because the mean of its divisors is an integer number (3439156807).

Almost surely, 2^6878313613 is an apocalyptic number.

It is an amenable number.

6878313613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6878313613 is an equidigital number, since it uses as much as digits as its factorization.

6878313613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 6878313613 is about 82935.5991899739. The cubic root of 6878313613 is about 1901.7816725309.

The spelling of 6878313613 in words is "six billion, eight hundred seventy-eight million, three hundred thirteen thousand, six hundred thirteen".