12207609 has 6 divisors (see below), whose sum is σ = 17633226. Its totient is φ = 8138400.

The previous prime is 12207607. The next prime is 12207617. The reversal of 12207609 is 90670221.

It can be written as a sum of positive squares in only one way, i.e., 11370384 + 837225 = 3372^2 + 915^2 .

It is not a de Polignac number, because 12207609 - 2¹ = 12207607 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12207607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678192 + ... + 678209.

It is an arithmetic number, because the mean of its divisors is an integer number (2938871).

Almost surely, 2^12207609 is an apocalyptic number.

It is an amenable number.

12207609 is a deficient number, since it is larger than the sum of its proper divisors (5425617).

12207609 is a wasteful number, since it uses less digits than its factorization.

12207609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356407 (or 1356404 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12207609 is about 3493.9388947147. The cubic root of 12207609 is about 230.2556011610.

The spelling of 12207609 in words is "twelve million, two hundred seven thousand, six hundred nine".