2671391 has 2 divisors, whose sum is σ = 2671392. Its totient is φ = 2671390.

The previous prime is 2671369. The next prime is 2671447. The reversal of 2671391 is 1931762.

2671391 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 2671391 - 2⁶ = 2671327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2671351) 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, 1335695 + 1335696.

It is an arithmetic number, because the mean of its divisors is an integer number (1335696).

2^2671391 is an apocalyptic number.

2671391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2671391 is an equidigital number, since it uses as much as digits as its factorization.

2671391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 2671391 is about 1634.4390475022. The cubic root of 2671391 is about 138.7540983017.

It can be divided in two parts, 26 and 71391, that added together give a palindrome (71417).

The spelling of 2671391 in words is "two million, six hundred seventy-one thousand, three hundred ninety-one".