12768993 has 12 divisors (see below), whose sum is σ = 19039488. Its totient is φ = 8237880.

The previous prime is 12768971. The next prime is 12768997. The reversal of 12768993 is 39986721.

12768993 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12768993 - 2¹³ = 12760801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12768997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22605 + ... + 23162.

It is an arithmetic number, because the mean of its divisors is an integer number (1586624).

Almost surely, 2^12768993 is an apocalyptic number.

It is an amenable number.

12768993 is a deficient number, since it is larger than the sum of its proper divisors (6270495).

12768993 is a wasteful number, since it uses less digits than its factorization.

12768993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45804 (or 45801 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 12768993 is about 3573.3727765236. The cubic root of 12768993 is about 233.7323808772.

The spelling of 12768993 in words is "twelve million, seven hundred sixty-eight thousand, nine hundred ninety-three".