12786487 has 16 divisors (see below), whose sum is σ = 15523840. Its totient is φ = 10287648.

The previous prime is 12786479. The next prime is 12786493. The reversal of 12786487 is 78468721.

It is not a de Polignac number, because 12786487 - 2³ = 12786479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12786427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16513 + ... + 17269.

It is an arithmetic number, because the mean of its divisors is an integer number (970240).

Almost surely, 2^12786487 is an apocalyptic number.

12786487 is a deficient number, since it is larger than the sum of its proper divisors (2737353).

12786487 is a wasteful number, since it uses less digits than its factorization.

12786487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910.

The product of its digits is 150528, while the sum is 43.

The square root of 12786487 is about 3575.8197661515. The cubic root of 12786487 is about 233.8390728815.

The spelling of 12786487 in words is "twelve million, seven hundred eighty-six thousand, four hundred eighty-seven".