12605605 has 8 divisors (see below), whose sum is σ = 15220512. Its totient is φ = 10021968.

The previous prime is 12605603. The next prime is 12605611. The reversal of 12605605 is 50650621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12605605 - 2¹ = 12605603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12605605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12605603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6919 + ... + 8548.

It is an arithmetic number, because the mean of its divisors is an integer number (1902564).

Almost surely, 2^12605605 is an apocalyptic number.

It is an amenable number.

12605605 is a deficient number, since it is larger than the sum of its proper divisors (2614907).

12605605 is a wasteful number, since it uses less digits than its factorization.

12605605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15635.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 12605605 is about 3550.4372970100. The cubic root of 12605605 is about 232.7311763918.

The spelling of 12605605 in words is "twelve million, six hundred five thousand, six hundred five".