12671517 has 4 divisors (see below), whose sum is σ = 16895360. Its totient is φ = 8447676.

The previous prime is 12671479. The next prime is 12671531. The reversal of 12671517 is 71517621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12671517 - 2⁷ = 12671389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12671557) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2111917 + ... + 2111922.

It is an arithmetic number, because the mean of its divisors is an integer number (4223840).

Almost surely, 2^12671517 is an apocalyptic number.

It is an amenable number.

12671517 is a deficient number, since it is larger than the sum of its proper divisors (4223843).

12671517 is an equidigital number, since it uses as much as digits as its factorization.

12671517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223842.

The product of its digits is 2940, while the sum is 30.

The square root of 12671517 is about 3559.7074317983. The cubic root of 12671517 is about 233.1361052194.

The spelling of 12671517 in words is "twelve million, six hundred seventy-one thousand, five hundred seventeen".