12744691 has 4 divisors (see below), whose sum is σ = 13298832. Its totient is φ = 12190552.

The previous prime is 12744653. The next prime is 12744701. The reversal of 12744691 is 19644721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19644721 = 2467 ⋅7963.

It is not a de Polignac number, because 12744691 - 2¹⁷ = 12613619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12844691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277036 + ... + 277081.

It is an arithmetic number, because the mean of its divisors is an integer number (3324708).

Almost surely, 2^12744691 is an apocalyptic number.

12744691 is a deficient number, since it is larger than the sum of its proper divisors (554141).

12744691 is an equidigital number, since it uses as much as digits as its factorization.

12744691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554140.

The product of its digits is 12096, while the sum is 34.

The square root of 12744691 is about 3569.9707281713. The cubic root of 12744691 is about 233.5840065656.

The spelling of 12744691 in words is "twelve million, seven hundred forty-four thousand, six hundred ninety-one".