12808817 has 4 divisors (see below), whose sum is σ = 14638656. Its totient is φ = 10978980.

The previous prime is 12808801. The next prime is 12808819. The reversal of 12808817 is 71880821.

12808817 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12808817 - 2⁴ = 12808801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12808819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914909 + ... + 914922.

It is an arithmetic number, because the mean of its divisors is an integer number (3659664).

Almost surely, 2^12808817 is an apocalyptic number.

It is an amenable number.

12808817 is a deficient number, since it is larger than the sum of its proper divisors (1829839).

12808817 is an equidigital number, since it uses as much as digits as its factorization.

12808817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829838.

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 12808817 is about 3578.9407650868. The cubic root of 12808817 is about 233.9751172801.

The spelling of 12808817 in words is "twelve million, eight hundred eight thousand, eight hundred seventeen".