6820873 has 2 divisors, whose sum is σ = 6820874. Its totient is φ = 6820872.

The previous prime is 6820841. The next prime is 6820897. The reversal of 6820873 is 3780286.

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., 6285049 + 535824 = 2507^2 + 732^2 .

It is a cyclic number.

It is not a de Polignac number, because 6820873 - 2⁵ = 6820841 is a prime.

It is not a weakly prime, because it can be changed into another prime (6820823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3410436 + 3410437.

It is an arithmetic number, because the mean of its divisors is an integer number (3410437).

Almost surely, 2^6820873 is an apocalyptic number.

It is an amenable number.

6820873 is a deficient number, since it is larger than the sum of its proper divisors (1).

6820873 is an equidigital number, since it uses as much as digits as its factorization.

6820873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 6820873 is about 2611.6801105802. The cubic root of 6820873 is about 189.6472958055.

The spelling of 6820873 in words is "six million, eight hundred twenty thousand, eight hundred seventy-three".