6855413 has 2 divisors, whose sum is σ = 6855414. Its totient is φ = 6855412.

The previous prime is 6855379. The next prime is 6855419. The reversal of 6855413 is 3145586.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6848689 + 6724 = 2617^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 6855413 - 2⁸ = 6855157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6855413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6855419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3427706 + 3427707.

It is an arithmetic number, because the mean of its divisors is an integer number (3427707).

Almost surely, 2^6855413 is an apocalyptic number.

It is an amenable number.

6855413 is a deficient number, since it is larger than the sum of its proper divisors (1).

6855413 is an equidigital number, since it uses as much as digits as its factorization.

6855413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 6855413 is about 2618.2843619439. The cubic root of 6855413 is about 189.9668732644.

The spelling of 6855413 in words is "six million, eight hundred fifty-five thousand, four hundred thirteen".