12741637 has 4 divisors (see below), whose sum is σ = 12748780. Its totient is φ = 12734496.

The previous prime is 12741613. The next prime is 12741661. The reversal of 12741637 is 73614721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12741613) and next prime (12741661).

It can be written as a sum of positive squares in 2 ways, for example, as 568516 + 12173121 = 754^2 + 3489^2 .

It is a 4-Lehmer number, since φ(12741637) divides (12741637-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 12741637 - 2¹¹ = 12739589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12741599 and 12741608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12741697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633 + ... + 5305.

It is an arithmetic number, because the mean of its divisors is an integer number (3187195).

Almost surely, 2^12741637 is an apocalyptic number.

It is an amenable number.

12741637 is a deficient number, since it is larger than the sum of its proper divisors (7143).

12741637 is an equidigital number, since it uses as much as digits as its factorization.

12741637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142.

The product of its digits is 7056, while the sum is 31.

The square root of 12741637 is about 3569.5429679442. The cubic root of 12741637 is about 233.5653472262.

The spelling of 12741637 in words is "twelve million, seven hundred forty-one thousand, six hundred thirty-seven".