6878401 has 2 divisors, whose sum is σ = 6878402. Its totient is φ = 6878400.

The previous prime is 6878383. The next prime is 6878407. The reversal of 6878401 is 1048786.

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., 3459600 + 3418801 = 1860^2 + 1849^2 .

It is a cyclic number.

It is not a de Polignac number, because 6878401 - 2⁵ = 6878369 is a prime.

It is not a weakly prime, because it can be changed into another prime (6878407) 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, 3439200 + 3439201.

It is an arithmetic number, because the mean of its divisors is an integer number (3439201).

Almost surely, 2^6878401 is an apocalyptic number.

It is an amenable number.

6878401 is a deficient number, since it is larger than the sum of its proper divisors (1).

6878401 is an equidigital number, since it uses as much as digits as its factorization.

6878401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 6878401 is about 2622.6705854911. The cubic root of 6878401 is about 190.1789726360.

The spelling of 6878401 in words is "six million, eight hundred seventy-eight thousand, four hundred one".