12586971 has 4 divisors (see below), whose sum is σ = 16782632. Its totient is φ = 8391312.

The previous prime is 12586967. The next prime is 12586979. The reversal of 12586971 is 17968521.

12586971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12586971 - 2² = 12586967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12586979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2097826 + ... + 2097831.

It is an arithmetic number, because the mean of its divisors is an integer number (4195658).

Almost surely, 2^12586971 is an apocalyptic number.

12586971 is a deficient number, since it is larger than the sum of its proper divisors (4195661).

12586971 is an equidigital number, since it uses as much as digits as its factorization.

12586971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195660.

The product of its digits is 30240, while the sum is 39.

The square root of 12586971 is about 3547.8121427156. The cubic root of 12586971 is about 232.6164430017.

The spelling of 12586971 in words is "twelve million, five hundred eighty-six thousand, nine hundred seventy-one".