12661135 has 8 divisors (see below), whose sum is σ = 15546960. Its totient is φ = 9893184.

The previous prime is 12661123. The next prime is 12661147. The reversal of 12661135 is 53116621.

It is an interprime number because it is at equal distance from previous prime (12661123) and next prime (12661147).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12661135 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29230 + ... + 29659.

It is an arithmetic number, because the mean of its divisors is an integer number (1943370).

Almost surely, 2^12661135 is an apocalyptic number.

12661135 is a deficient number, since it is larger than the sum of its proper divisors (2885825).

12661135 is an equidigital number, since it uses as much as digits as its factorization.

12661135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58937.

The product of its digits is 1080, while the sum is 25.

The square root of 12661135 is about 3558.2488670693. The cubic root of 12661135 is about 233.0724169655.

Adding to 12661135 its reverse (53116621), we get a palindrome (65777756).

It can be divided in two parts, 1266 and 1135, that added together give a 4-th power (2401 = 7⁴).

The spelling of 12661135 in words is "twelve million, six hundred sixty-one thousand, one hundred thirty-five".