12871564 has 6 divisors (see below), whose sum is σ = 22525244. Its totient is φ = 6435780.

The previous prime is 12871543. The next prime is 12871583. The reversal of 12871564 is 46517821.

It is an unprimeable number.

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, 1608942 + ... + 1608949.

Almost surely, 2^12871564 is an apocalyptic number.

It is an amenable number.

12871564 is a deficient number, since it is larger than the sum of its proper divisors (9653680).

12871564 is a wasteful number, since it uses less digits than its factorization.

12871564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217895 (or 3217893 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 12871564 is about 3587.6961967257. The cubic root of 12871564 is about 234.3565557989.

The spelling of 12871564 in words is "twelve million, eight hundred seventy-one thousand, five hundred sixty-four".