6911321 has 2 divisors, whose sum is σ = 6911322. Its totient is φ = 6911320.

The previous prime is 6911291. The next prime is 6911323. The reversal of 6911321 is 1231196.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6760000 + 151321 = 2600^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 6911321 - 2⁶ = 6911257 is a prime.

Together with 6911323, 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 (6911323) 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, 3455660 + 3455661.

It is an arithmetic number, because the mean of its divisors is an integer number (3455661).

Almost surely, 2^6911321 is an apocalyptic number.

It is an amenable number.

6911321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6911321 is an equidigital number, since it uses as much as digits as its factorization.

6911321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 23.

The square root of 6911321 is about 2628.9391396531. The cubic root of 6911321 is about 190.4818885012.

The spelling of 6911321 in words is "six million, nine hundred eleven thousand, three hundred twenty-one".