8864689 has 4 divisors (see below), whose sum is σ = 8871156. Its totient is φ = 8858224.

The previous prime is 8864663. The next prime is 8864731. The reversal of 8864689 is 9864688.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6250000 + 2614689 = 2500^2 + 1617^2 .

It is a cyclic number.

It is not a de Polignac number, because 8864689 - 2⁷ = 8864561 is a prime.

It is a super-2 number, since 2×8864689² = 157165422133442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8864189) 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 in 3 ways as a sum of consecutive naturals, for example, 274 + ... + 4219.

It is an arithmetic number, because the mean of its divisors is an integer number (2217789).

Almost surely, 2^8864689 is an apocalyptic number.

It is an amenable number.

8864689 is a deficient number, since it is larger than the sum of its proper divisors (6467).

8864689 is a wasteful number, since it uses less digits than its factorization.

8864689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466.

The product of its digits is 663552, while the sum is 49.

The square root of 8864689 is about 2977.3627592217. The cubic root of 8864689 is about 206.9606761711.

Subtracting 8864689 from its reverse (9864688), we obtain a palindrome (999999).

The spelling of 8864689 in words is "eight million, eight hundred sixty-four thousand, six hundred eighty-nine".