12808567 has 4 divisors (see below), whose sum is σ = 12816216. Its totient is φ = 12800920.

The previous prime is 12808529. The next prime is 12808583. The reversal of 12808567 is 76580821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 76580821 = 97 ⋅789493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12808567 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 (12802567) 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, 109 + ... + 5062.

It is an arithmetic number, because the mean of its divisors is an integer number (3204054).

Almost surely, 2^12808567 is an apocalyptic number.

12808567 is a deficient number, since it is larger than the sum of its proper divisors (7649).

12808567 is an equidigital number, since it uses as much as digits as its factorization.

12808567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7648.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12808567 is about 3578.9058383813. The cubic root of 12808567 is about 233.9735950433.

The spelling of 12808567 in words is "twelve million, eight hundred eight thousand, five hundred sixty-seven".