12489565 has 16 divisors (see below), whose sum is σ = 16733376. Its totient is φ = 8870400.

The previous prime is 12489541. The next prime is 12489569. The reversal of 12489565 is 56598421.

It is not a de Polignac number, because 12489565 - 2¹³ = 12481373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276 + ... + 5005.

It is an arithmetic number, because the mean of its divisors is an integer number (1045836).

Almost surely, 2^12489565 is an apocalyptic number.

It is an amenable number.

12489565 is a deficient number, since it is larger than the sum of its proper divisors (4243811).

12489565 is a wasteful number, since it uses less digits than its factorization.

12489565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340.

The product of its digits is 86400, while the sum is 40.

The square root of 12489565 is about 3534.0578659665. The cubic root of 12489565 is about 232.0148437292.

The spelling of 12489565 in words is "twelve million, four hundred eighty-nine thousand, five hundred sixty-five".