6812161 has 2 divisors, whose sum is σ = 6812162. Its totient is φ = 6812160.

The previous prime is 6812077. The next prime is 6812167. The reversal of 6812161 is 1612186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3459600 + 3352561 = 1860^2 + 1831^2 .

It is a cyclic number.

It is not a de Polignac number, because 6812161 - 2¹⁵ = 6779393 is a prime.

It is not a weakly prime, because it can be changed into another prime (6812167) 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, 3406080 + 3406081.

It is an arithmetic number, because the mean of its divisors is an integer number (3406081).

Almost surely, 2^6812161 is an apocalyptic number.

It is an amenable number.

6812161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6812161 is an equidigital number, since it uses as much as digits as its factorization.

6812161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 25.

The square root of 6812161 is about 2610.0116857976. The cubic root of 6812161 is about 189.5665186982.

Adding to 6812161 its sum of digits (25), we get a palindrome (6812186).

The spelling of 6812161 in words is "six million, eight hundred twelve thousand, one hundred sixty-one".