12861712 has 10 divisors (see below), whose sum is σ = 24919598. Its totient is φ = 6430848.

The previous prime is 12861701. The next prime is 12861731. The reversal of 12861712 is 21716821.

It can be written as a sum of positive squares in only one way, i.e., 12278016 + 583696 = 3504^2 + 764^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401913 + ... + 401944.

Almost surely, 2^12861712 is an apocalyptic number.

It is an amenable number.

12861712 is a deficient number, since it is larger than the sum of its proper divisors (12057886).

12861712 is an equidigital number, since it uses as much as digits as its factorization.

12861712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803865 (or 803859 counting only the distinct ones).

The product of its digits is 1344, while the sum is 28.

The square root of 12861712 is about 3586.3229079379. The cubic root of 12861712 is about 234.2967477311.

The spelling of 12861712 in words is "twelve million, eight hundred sixty-one thousand, seven hundred twelve".