12661495 has 16 divisors (see below), whose sum is σ = 18943488. Its totient is φ = 7892640.

The previous prime is 12661483. The next prime is 12661499. The reversal of 12661495 is 59416621.

It is not a de Polignac number, because 12661495 - 2⁹ = 12660983 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 12661495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16059 + ... + 16828.

It is an arithmetic number, because the mean of its divisors is an integer number (1183968).

Almost surely, 2^12661495 is an apocalyptic number.

12661495 is a deficient number, since it is larger than the sum of its proper divisors (6281993).

12661495 is a wasteful number, since it uses less digits than its factorization.

12661495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32910.

The product of its digits is 12960, while the sum is 34.

The square root of 12661495 is about 3558.2994533906. The cubic root of 12661495 is about 233.0746259637.

The spelling of 12661495 in words is "twelve million, six hundred sixty-one thousand, four hundred ninety-five".