6921353 has 2 divisors, whose sum is σ = 6921354. Its totient is φ = 6921352.

The previous prime is 6921347. The next prime is 6921389. The reversal of 6921353 is 3531296.

6921353 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 can be written as a sum of positive squares in only one way, i.e., 5895184 + 1026169 = 2428^2 + 1013^2 .

It is a cyclic number.

It is not a de Polignac number, because 6921353 - 2⁴ = 6921337 is a prime.

It is not a weakly prime, because it can be changed into another prime (6921653) 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, 3460676 + 3460677.

It is an arithmetic number, because the mean of its divisors is an integer number (3460677).

Almost surely, 2^6921353 is an apocalyptic number.

It is an amenable number.

6921353 is a deficient number, since it is larger than the sum of its proper divisors (1).

6921353 is an equidigital number, since it uses as much as digits as its factorization.

6921353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 29.

The square root of 6921353 is about 2630.8464417370. The cubic root of 6921353 is about 190.5740074302.

The spelling of 6921353 in words is "six million, nine hundred twenty-one thousand, three hundred fifty-three".