12226689 has 24 divisors (see below), whose sum is σ = 18855720. Its totient is φ = 7607808.

The previous prime is 12226673. The next prime is 12226691. The reversal of 12226689 is 98662221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3932289 + 8294400 = 1983^2 + 2880^2 .

It is not a de Polignac number, because 12226689 - 2⁴ = 12226673 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12226609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23767 + ... + 24275.

It is an arithmetic number, because the mean of its divisors is an integer number (785655).

Almost surely, 2^12226689 is an apocalyptic number.

It is an amenable number.

12226689 is a deficient number, since it is larger than the sum of its proper divisors (6629031).

12226689 is a wasteful number, since it uses less digits than its factorization.

12226689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 686 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 12226689 is about 3496.6682713692. The cubic root of 12226689 is about 230.3754987871.

The spelling of 12226689 in words is "twelve million, two hundred twenty-six thousand, six hundred eighty-nine".