8612689 has 2 divisors, whose sum is σ = 8612690. Its totient is φ = 8612688.

The previous prime is 8612687. The next prime is 8612701. The reversal of 8612689 is 9862168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 2585664 = 2455^2 + 1608^2 .

It is a cyclic number.

It is not a de Polignac number, because 8612689 - 2¹ = 8612687 is a prime.

Together with 8612687, it forms a pair of twin primes.

8612689 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8612683) 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, 4306344 + 4306345.

It is an arithmetic number, because the mean of its divisors is an integer number (4306345).

Almost surely, 2^8612689 is an apocalyptic number.

It is an amenable number.

8612689 is a deficient number, since it is larger than the sum of its proper divisors (1).

8612689 is an equidigital number, since it uses as much as digits as its factorization.

8612689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 8612689 is about 2934.7383188284. The cubic root of 8612689 is about 204.9806763463.

The spelling of 8612689 in words is "eight million, six hundred twelve thousand, six hundred eighty-nine".