6581371 has 2 divisors, whose sum is σ = 6581372. Its totient is φ = 6581370.

The previous prime is 6581369. The next prime is 6581387. The reversal of 6581371 is 1731856.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6581371 - 2¹ = 6581369 is a prime.

Together with 6581369, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6581321) 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, 3290685 + 3290686.

It is an arithmetic number, because the mean of its divisors is an integer number (3290686).

Almost surely, 2^6581371 is an apocalyptic number.

6581371 is a deficient number, since it is larger than the sum of its proper divisors (1).

6581371 is an equidigital number, since it uses as much as digits as its factorization.

6581371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 6581371 is about 2565.4182894803. The cubic root of 6581371 is about 187.4010950968.

The spelling of 6581371 in words is "six million, five hundred eighty-one thousand, three hundred seventy-one".