6179861 has 2 divisors, whose sum is σ = 6179862. Its totient is φ = 6179860.

The previous prime is 6179821. The next prime is 6179863. The reversal of 6179861 is 1689716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6100900 + 78961 = 2470^2 + 281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6179861 is a prime.

Together with 6179863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6179863) 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, 3089930 + 3089931.

It is an arithmetic number, because the mean of its divisors is an integer number (3089931).

Almost surely, 2^6179861 is an apocalyptic number.

It is an amenable number.

6179861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6179861 is an equidigital number, since it uses as much as digits as its factorization.

6179861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 6179861 is about 2485.9326217740. The cubic root of 6179861 is about 183.5099297465.

The spelling of 6179861 in words is "six million, one hundred seventy-nine thousand, eight hundred sixty-one".