12648693 has 4 divisors (see below), whose sum is σ = 16864928. Its totient is φ = 8432460.

The previous prime is 12648683. The next prime is 12648719. The reversal of 12648693 is 39684621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39684621 = 3 ⋅13228207.

It is not a de Polignac number, because 12648693 - 2¹⁶ = 12583157 is a prime.

It is the 3557-th Hogben number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12648613) by changing a digit.

It is a nontrivial repunit in base 3556.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2108113 + ... + 2108118.

It is an arithmetic number, because the mean of its divisors is an integer number (4216232).

Almost surely, 2^12648693 is an apocalyptic number.

It is an amenable number.

12648693 is a deficient number, since it is larger than the sum of its proper divisors (4216235).

12648693 is an equidigital number, since it uses as much as digits as its factorization.

12648693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216234.

The product of its digits is 62208, while the sum is 39.

The square root of 12648693 is about 3556.5001054407. The cubic root of 12648693 is about 232.9960457863.

The spelling of 12648693 in words is "twelve million, six hundred forty-eight thousand, six hundred ninety-three".