12812863 has 12 divisors (see below), whose sum is σ = 15554160. Its totient is φ = 10504032.

The previous prime is 12812861. The next prime is 12812893. The reversal of 12812863 is 36821821.

12812863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12812863 - 2¹ = 12812861 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 (12812861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4558 + ... + 6811.

It is an arithmetic number, because the mean of its divisors is an integer number (1296180).

Almost surely, 2^12812863 is an apocalyptic number.

12812863 is a deficient number, since it is larger than the sum of its proper divisors (2741297).

12812863 is a wasteful number, since it uses less digits than its factorization.

12812863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11406 (or 11399 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 12812863 is about 3579.5059714994. The cubic root of 12812863 is about 233.9997504076. Note that the first 3 decimals are identical.

The spelling of 12812863 in words is "twelve million, eight hundred twelve thousand, eight hundred sixty-three".