2685191 has 2 divisors, whose sum is σ = 2685192. Its totient is φ = 2685190.

The previous prime is 2685187. The next prime is 2685211. The reversal of 2685191 is 1915862.

2685191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2685191 - 2² = 2685187 is a prime.

It is equal to p₁₉₅₆₂₉ and since 2685191 and 195629 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2685101) 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, 1342595 + 1342596.

It is an arithmetic number, because the mean of its divisors is an integer number (1342596).

2^2685191 is an apocalyptic number.

2685191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685191 is an equidigital number, since it uses as much as digits as its factorization.

2685191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 2685191 is about 1638.6552413488. The cubic root of 2685191 is about 138.9926155869.

The spelling of 2685191 in words is "two million, six hundred eighty-five thousand, one hundred ninety-one".