8636869 has 2 divisors, whose sum is σ = 8636870. Its totient is φ = 8636868.

The previous prime is 8636857. The next prime is 8636893. The reversal of 8636869 is 9686368.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7344100 + 1292769 = 2710^2 + 1137^2 .

It is a cyclic number.

It is not a de Polignac number, because 8636869 - 2⁷ = 8636741 is a prime.

It is a super-2 number, since 2×8636869² = 149191012246322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8636819) 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, 4318434 + 4318435.

It is an arithmetic number, because the mean of its divisors is an integer number (4318435).

Almost surely, 2^8636869 is an apocalyptic number.

It is an amenable number.

8636869 is a deficient number, since it is larger than the sum of its proper divisors (1).

8636869 is an equidigital number, since it uses as much as digits as its factorization.

8636869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 46.

The square root of 8636869 is about 2938.8550491646. The cubic root of 8636869 is about 205.1723238718.

The spelling of 8636869 in words is "eight million, six hundred thirty-six thousand, eight hundred sixty-nine".