12661475 has 6 divisors (see below), whose sum is σ = 15700260. Its totient is φ = 10129160.

The previous prime is 12661469. The next prime is 12661483. The reversal of 12661475 is 57416621.

It is not a de Polignac number, because 12661475 - 2¹⁴ = 12645091 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 253205 + ... + 253254.

It is an arithmetic number, because the mean of its divisors is an integer number (2616710).

Almost surely, 2^12661475 is an apocalyptic number.

12661475 is a deficient number, since it is larger than the sum of its proper divisors (3038785).

12661475 is an equidigital number, since it uses as much as digits as its factorization.

12661475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506469 (or 506464 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 12661475 is about 3558.2966430583. The cubic root of 12661475 is about 233.0745032427.

The spelling of 12661475 in words is "twelve million, six hundred sixty-one thousand, four hundred seventy-five".