12871817 has 8 divisors (see below), whose sum is σ = 14817600. Its totient is φ = 10952784.

The previous prime is 12871811. The next prime is 12871841. The reversal of 12871817 is 71817821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12871817 - 2⁶ = 12871753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12871811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5642 + ... + 7587.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^12871817 is an apocalyptic number.

It is an amenable number.

12871817 is a deficient number, since it is larger than the sum of its proper divisors (1945783).

12871817 is a wasteful number, since it uses less digits than its factorization.

12871817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13375.

The product of its digits is 6272, while the sum is 35.

The square root of 12871817 is about 3587.7314559482. The cubic root of 12871817 is about 234.3580912720.

The spelling of 12871817 in words is "twelve million, eight hundred seventy-one thousand, eight hundred seventeen".