12679543 has 2 divisors, whose sum is σ = 12679544. Its totient is φ = 12679542.

The previous prime is 12679531. The next prime is 12679571. The reversal of 12679543 is 34597621.

It is a weak prime.

It is an emirp because it is prime and its reverse (34597621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12679543 - 2²¹ = 10582391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12679523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6339771 + 6339772.

It is an arithmetic number, because the mean of its divisors is an integer number (6339772).

Almost surely, 2^12679543 is an apocalyptic number.

12679543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12679543 is an equidigital number, since it uses as much as digits as its factorization.

12679543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 12679543 is about 3560.8345931818. The cubic root of 12679543 is about 233.1853167822.

The spelling of 12679543 in words is "twelve million, six hundred seventy-nine thousand, five hundred forty-three".