12663005 has 4 divisors (see below), whose sum is σ = 15195612. Its totient is φ = 10130400.

The previous prime is 12662999. The next prime is 12663019. The reversal of 12663005 is 50036621.

12663005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50036621 = 197 ⋅253993.

It can be written as a sum of positive squares in 2 ways, for example, as 5555449 + 7107556 = 2357^2 + 2666^2 .

It is not a de Polignac number, because 12663005 - 2¹⁶ = 12597469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1266296 + ... + 1266305.

It is an arithmetic number, because the mean of its divisors is an integer number (3798903).

Almost surely, 2^12663005 is an apocalyptic number.

It is an amenable number.

12663005 is a deficient number, since it is larger than the sum of its proper divisors (2532607).

12663005 is an equidigital number, since it uses as much as digits as its factorization.

12663005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532606.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 12663005 is about 3558.5116270711. The cubic root of 12663005 is about 233.0838910280.

Adding to 12663005 its sum of digits (23), we get a triangular number (12663028 = T₅₀₃₂).

Adding to 12663005 its reverse (50036621), we get a palindrome (62699626).

The spelling of 12663005 in words is "twelve million, six hundred sixty-three thousand, five".