12862861 has 16 divisors (see below), whose sum is σ = 14727168. Its totient is φ = 11127600.

The previous prime is 12862849. The next prime is 12862873. The reversal of 12862861 is 16826821.

It is an interprime number because it is at equal distance from previous prime (12862849) and next prime (12862873).

It is a de Polignac number, because none of the positive numbers 2^k-12862861 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 (12862831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22566 + ... + 23128.

It is an arithmetic number, because the mean of its divisors is an integer number (920448).

Almost surely, 2^12862861 is an apocalyptic number.

12862861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12862861 is a deficient number, since it is larger than the sum of its proper divisors (1864307).

12862861 is a wasteful number, since it uses less digits than its factorization.

12862861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 9216, while the sum is 34.

The square root of 12862861 is about 3586.4830962936. The cubic root of 12862861 is about 234.3037244837.

The spelling of 12862861 in words is "twelve million, eight hundred sixty-two thousand, eight hundred sixty-one".