6725891 has 2 divisors, whose sum is σ = 6725892. Its totient is φ = 6725890.

The previous prime is 6725881. The next prime is 6725899. The reversal of 6725891 is 1985276.

6725891 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 is a cyclic number.

It is not a de Polignac number, because 6725891 - 2⁶ = 6725827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6725899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3362945 + 3362946.

It is an arithmetic number, because the mean of its divisors is an integer number (3362946).

Almost surely, 2^6725891 is an apocalyptic number.

6725891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6725891 is an equidigital number, since it uses as much as digits as its factorization.

6725891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 6725891 is about 2593.4322817456. The cubic root of 6725891 is about 188.7628858358.

The spelling of 6725891 in words is "six million, seven hundred twenty-five thousand, eight hundred ninety-one".