12678593 has 6 divisors (see below), whose sum is σ = 12982194. Its totient is φ = 12381936.

The previous prime is 12678577. The next prime is 12678619. The reversal of 12678593 is 39587621.

It can be written as a sum of positive squares in only one way, i.e., 6880129 + 5798464 = 2623^2 + 2408^2 .

It is not a de Polignac number, because 12678593 - 2⁴ = 12678577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12678593.

It is not an unprimeable number, because it can be changed into a prime (12678563) 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 5 ways as a sum of consecutive naturals, for example, 1580 + ... + 5277.

It is an arithmetic number, because the mean of its divisors is an integer number (2163699).

Almost surely, 2^12678593 is an apocalyptic number.

It is an amenable number.

12678593 is a deficient number, since it is larger than the sum of its proper divisors (303601).

12678593 is an frugal number, since it uses more digits than its factorization.

12678593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6943 (or 6900 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 12678593 is about 3560.7011949895. The cubic root of 12678593 is about 233.1794929239.

The spelling of 12678593 in words is "twelve million, six hundred seventy-eight thousand, five hundred ninety-three".