8612861 has 2 divisors, whose sum is σ = 8612862. Its totient is φ = 8612860.

The previous prime is 8612839. The next prime is 8612873. The reversal of 8612861 is 1682168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4884100 + 3728761 = 2210^2 + 1931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8612861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8612801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4306430 + 4306431.

It is an arithmetic number, because the mean of its divisors is an integer number (4306431).

Almost surely, 2^8612861 is an apocalyptic number.

It is an amenable number.

8612861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8612861 is an equidigital number, since it uses as much as digits as its factorization.

8612861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 32.

The square root of 8612861 is about 2934.7676228281. The cubic root of 8612861 is about 204.9820408618.

The spelling of 8612861 in words is "eight million, six hundred twelve thousand, eight hundred sixty-one".