12195565 has 8 divisors (see below), whose sum is σ = 14911128. Its totient is φ = 9572160.

The previous prime is 12195563. The next prime is 12195569. The reversal of 12195565 is 56559121.

It can be written as a sum of positive squares in 4 ways, for example, as 5774409 + 6421156 = 2403^2 + 2534^2 .

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

It is not a de Polignac number, because 12195565 - 2¹ = 12195563 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 12195565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12195563) 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, 22746 + ... + 23275.

It is an arithmetic number, because the mean of its divisors is an integer number (1863891).

Almost surely, 2^12195565 is an apocalyptic number.

It is an amenable number.

12195565 is a deficient number, since it is larger than the sum of its proper divisors (2715563).

12195565 is an equidigital number, since it uses as much as digits as its factorization.

12195565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46079.

The product of its digits is 13500, while the sum is 34.

The square root of 12195565 is about 3492.2149132034. The cubic root of 12195565 is about 230.1798530225.

The spelling of 12195565 in words is "twelve million, one hundred ninety-five thousand, five hundred sixty-five".