8144861 has 2 divisors, whose sum is σ = 8144862. Its totient is φ = 8144860.

The previous prime is 8144849. The next prime is 8144879. The reversal of 8144861 is 1684418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4972900 + 3171961 = 2230^2 + 1781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8144861 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 (8144161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4072430 + 4072431.

It is an arithmetic number, because the mean of its divisors is an integer number (4072431).

Almost surely, 2^8144861 is an apocalyptic number.

It is an amenable number.

8144861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8144861 is an equidigital number, since it uses as much as digits as its factorization.

8144861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 32.

The square root of 8144861 is about 2853.9202862028. The cubic root of 8144861 is about 201.1999610686.

The spelling of 8144861 in words is "eight million, one hundred forty-four thousand, eight hundred sixty-one".