6823121 has 2 divisors, whose sum is σ = 6823122. Its totient is φ = 6823120.

The previous prime is 6823081. The next prime is 6823123. The reversal of 6823121 is 1213286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4752400 + 2070721 = 2180^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 6823121 - 2⁶ = 6823057 is a prime.

Together with 6823123, 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 (6823123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3411560 + 3411561.

It is an arithmetic number, because the mean of its divisors is an integer number (3411561).

Almost surely, 2^6823121 is an apocalyptic number.

It is an amenable number.

6823121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6823121 is an equidigital number, since it uses as much as digits as its factorization.

6823121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 6823121 is about 2612.1104494259. The cubic root of 6823121 is about 189.6681279528.

The spelling of 6823121 in words is "six million, eight hundred twenty-three thousand, one hundred twenty-one".