6865613 has 2 divisors, whose sum is σ = 6865614. Its totient is φ = 6865612.

The previous prime is 6865597. The next prime is 6865643. The reversal of 6865613 is 3165686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4609609 + 2256004 = 2147^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 6865613 - 2⁴ = 6865597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6865643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432806 + 3432807.

It is an arithmetic number, because the mean of its divisors is an integer number (3432807).

Almost surely, 2^6865613 is an apocalyptic number.

It is an amenable number.

6865613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6865613 is an equidigital number, since it uses as much as digits as its factorization.

6865613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 6865613 is about 2620.2314783240. The cubic root of 6865613 is about 190.0610422517.

The spelling of 6865613 in words is "six million, eight hundred sixty-five thousand, six hundred thirteen".