12863775 has 12 divisors (see below), whose sum is σ = 21268232. Its totient is φ = 6860640.

The previous prime is 12863771. The next prime is 12863777. The reversal of 12863775 is 57736821.

12863775 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12863775 - 2² = 12863771 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 (12863771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85684 + ... + 85833.

Almost surely, 2^12863775 is an apocalyptic number.

12863775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12863775 is a deficient number, since it is larger than the sum of its proper divisors (8404457).

12863775 is a wasteful number, since it uses less digits than its factorization.

12863775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171530 (or 171525 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 12863775 is about 3586.6105169087. The cubic root of 12863775 is about 234.3092740146.

It can be divided in two parts, 128 and 63775, that added together give a triangular number (63903 = T₃₅₇).

The spelling of 12863775 in words is "twelve million, eight hundred sixty-three thousand, seven hundred seventy-five".