12788663 has 4 divisors (see below), whose sum is σ = 13005480. Its totient is φ = 12571848.

The previous prime is 12788639. The next prime is 12788669. The reversal of 12788663 is 36688721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36688721 = 193 ⋅190097.

It is a cyclic number.

It is not a de Polignac number, because 12788663 - 2¹⁰ = 12787639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12788663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788669) 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 3 ways as a sum of consecutive naturals, for example, 108320 + ... + 108437.

It is an arithmetic number, because the mean of its divisors is an integer number (3251370).

Almost surely, 2^12788663 is an apocalyptic number.

12788663 is a deficient number, since it is larger than the sum of its proper divisors (216817).

12788663 is an equidigital number, since it uses as much as digits as its factorization.

12788663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216816.

The product of its digits is 96768, while the sum is 41.

The square root of 12788663 is about 3576.1240191022. The cubic root of 12788663 is about 233.8523370137.

The spelling of 12788663 in words is "twelve million, seven hundred eighty-eight thousand, six hundred sixty-three".