12730687 has 2 divisors, whose sum is σ = 12730688. Its totient is φ = 12730686.

The previous prime is 12730673. The next prime is 12730691. The reversal of 12730687 is 78603721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12730687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12730657) 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 as a sum of consecutive naturals, namely, 6365343 + 6365344.

It is an arithmetic number, because the mean of its divisors is an integer number (6365344).

Almost surely, 2^12730687 is an apocalyptic number.

12730687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12730687 is an equidigital number, since it uses as much as digits as its factorization.

12730687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 12730687 is about 3568.0088284644. The cubic root of 12730687 is about 233.4984203590.

The spelling of 12730687 in words is "twelve million, seven hundred thirty thousand, six hundred eighty-seven".