6677861 has 2 divisors, whose sum is σ = 6677862. Its totient is φ = 6677860.

The previous prime is 6677851. The next prime is 6677887. The reversal of 6677861 is 1687766.

6677861 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., 3632836 + 3045025 = 1906^2 + 1745^2 .

It is a cyclic number.

It is not a de Polignac number, because 6677861 - 2¹⁰ = 6676837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6677831) 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, 3338930 + 3338931.

It is an arithmetic number, because the mean of its divisors is an integer number (3338931).

Almost surely, 2^6677861 is an apocalyptic number.

It is an amenable number.

6677861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6677861 is an equidigital number, since it uses as much as digits as its factorization.

6677861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 6677861 is about 2584.1557615593. The cubic root of 6677861 is about 188.3124895789.

The spelling of 6677861 in words is "six million, six hundred seventy-seven thousand, eight hundred sixty-one".