6878129 has 2 divisors, whose sum is σ = 6878130. Its totient is φ = 6878128.

The previous prime is 6878107. The next prime is 6878141. The reversal of 6878129 is 9218786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5382400 + 1495729 = 2320^2 + 1223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6878129 is a prime.

It is not a weakly prime, because it can be changed into another prime (6878029) 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, 3439064 + 3439065.

It is an arithmetic number, because the mean of its divisors is an integer number (3439065).

Almost surely, 2^6878129 is an apocalyptic number.

It is an amenable number.

6878129 is a deficient number, since it is larger than the sum of its proper divisors (1).

6878129 is an equidigital number, since it uses as much as digits as its factorization.

6878129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 6878129 is about 2622.6187294382. The cubic root of 6878129 is about 190.1764657858.

It can be divided in two parts, 6878 and 129, that added together give a palindrome (7007).

The spelling of 6878129 in words is "six million, eight hundred seventy-eight thousand, one hundred twenty-nine".