12758587 has 4 divisors (see below), whose sum is σ = 12766480. Its totient is φ = 12750696.

The previous prime is 12758569. The next prime is 12758591. The reversal of 12758587 is 78585721.

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, and also an emirpimes, since its reverse is a distinct semiprime: 78585721 = 131 ⋅599891.

It is a cyclic number.

It is not a de Polignac number, because 12758587 - 2¹⁵ = 12725819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12758567) 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 3 ways as a sum of consecutive naturals, for example, 543 + ... + 5080.

It is an arithmetic number, because the mean of its divisors is an integer number (3191620).

Almost surely, 2^12758587 is an apocalyptic number.

12758587 is a deficient number, since it is larger than the sum of its proper divisors (7893).

12758587 is an equidigital number, since it uses as much as digits as its factorization.

12758587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892.

The product of its digits is 156800, while the sum is 43.

The square root of 12758587 is about 3571.9164323931. The cubic root of 12758587 is about 233.6688707747.

The spelling of 12758587 in words is "twelve million, seven hundred fifty-eight thousand, five hundred eighty-seven".