12738617 has 2 divisors, whose sum is σ = 12738618. Its totient is φ = 12738616.

The previous prime is 12738581. The next prime is 12738623. The reversal of 12738617 is 71683721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12243001 + 495616 = 3499^2 + 704^2 .

It is an emirp because it is prime and its reverse (71683721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12738617 - 2⁸ = 12738361 is a prime.

It is a super-3 number, since 3×12738617³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12738637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6369308 + 6369309.

It is an arithmetic number, because the mean of its divisors is an integer number (6369309).

Almost surely, 2^12738617 is an apocalyptic number.

It is an amenable number.

12738617 is a deficient number, since it is larger than the sum of its proper divisors (1).

12738617 is an equidigital number, since it uses as much as digits as its factorization.

12738617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 35.

The square root of 12738617 is about 3569.1199195320. The cubic root of 12738617 is about 233.5468926879.

The spelling of 12738617 in words is "twelve million, seven hundred thirty-eight thousand, six hundred seventeen".