12724693 has 4 divisors (see below), whose sum is σ = 12805900. Its totient is φ = 12643488.

The previous prime is 12724667. The next prime is 12724709. The reversal of 12724693 is 39642721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39642721 = 19 ⋅2086459.

It can be written as a sum of positive squares in 2 ways, for example, as 2439844 + 10284849 = 1562^2 + 3207^2 .

It is a cyclic number.

It is not a de Polignac number, because 12724693 - 2⁹ = 12724181 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 (12724493) 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, 40368 + ... + 40681.

It is an arithmetic number, because the mean of its divisors is an integer number (3201475).

Almost surely, 2^12724693 is an apocalyptic number.

It is an amenable number.

12724693 is a deficient number, since it is larger than the sum of its proper divisors (81207).

12724693 is an equidigital number, since it uses as much as digits as its factorization.

12724693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81206.

The product of its digits is 18144, while the sum is 34.

The square root of 12724693 is about 3567.1687652815. The cubic root of 12724693 is about 233.4617685206.

The spelling of 12724693 in words is "twelve million, seven hundred twenty-four thousand, six hundred ninety-three".