6221671 has 2 divisors, whose sum is σ = 6221672. Its totient is φ = 6221670.

The previous prime is 6221651. The next prime is 6221693. The reversal of 6221671 is 1761226.

6221671 is digitally balanced in base 3, 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 6221671 - 2⁵ = 6221639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6221651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3110835 + 3110836.

It is an arithmetic number, because the mean of its divisors is an integer number (3110836).

Almost surely, 2^6221671 is an apocalyptic number.

6221671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6221671 is an equidigital number, since it uses as much as digits as its factorization.

6221671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 6221671 is about 2494.3277651504. The cubic root of 6221671 is about 183.9228469067.

Adding to 6221671 its reverse (1761226), we get a palindrome (7982897).

The spelling of 6221671 in words is "six million, two hundred twenty-one thousand, six hundred seventy-one".