12740587 has 2 divisors, whose sum is σ = 12740588. Its totient is φ = 12740586.

The previous prime is 12740579. The next prime is 12740591. The reversal of 12740587 is 78504721.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78504721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12740587 - 2³ = 12740579 is a prime.

It is not a weakly prime, because it can be changed into another prime (12747587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6370293 + 6370294.

It is an arithmetic number, because the mean of its divisors is an integer number (6370294).

Almost surely, 2^12740587 is an apocalyptic number.

12740587 is a deficient number, since it is larger than the sum of its proper divisors (1).

12740587 is an equidigital number, since it uses as much as digits as its factorization.

12740587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 12740587 is about 3569.3958872616. The cubic root of 12740587 is about 233.5589312439.

The spelling of 12740587 in words is "twelve million, seven hundred forty thousand, five hundred eighty-seven".