12861207 has 16 divisors (see below), whose sum is σ = 19111680. Its totient is φ = 8548056.

The previous prime is 12861203. The next prime is 12861217. The reversal of 12861207 is 70216821.

It is not a de Polignac number, because 12861207 - 2² = 12861203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12861203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13108 + ... + 14054.

It is an arithmetic number, because the mean of its divisors is an integer number (1194480).

Almost surely, 2^12861207 is an apocalyptic number.

12861207 is a deficient number, since it is larger than the sum of its proper divisors (6250473).

12861207 is an equidigital number, since it uses as much as digits as its factorization.

12861207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 12861207 is about 3586.2525008705. The cubic root of 12861207 is about 234.2936812289.

The spelling of 12861207 in words is "twelve million, eight hundred sixty-one thousand, two hundred seven".