6143861 has 2 divisors, whose sum is σ = 6143862. Its totient is φ = 6143860.

The previous prime is 6143827. The next prime is 6143927. The reversal of 6143861 is 1683416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5202961 + 940900 = 2281^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 6143861 - 2¹⁰ = 6142837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6149861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3071930 + 3071931.

It is an arithmetic number, because the mean of its divisors is an integer number (3071931).

Almost surely, 2^6143861 is an apocalyptic number.

6143861 is the 1109-th centered decagonal number.

It is an amenable number.

6143861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6143861 is an equidigital number, since it uses as much as digits as its factorization.

6143861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 6143861 is about 2478.6813026285. The cubic root of 6143861 is about 183.1528975891.

The spelling of 6143861 in words is "six million, one hundred forty-three thousand, eight hundred sixty-one".