12823567 has 4 divisors (see below), whose sum is σ = 12837240. Its totient is φ = 12809896.

The previous prime is 12823541. The next prime is 12823607. The reversal of 12823567 is 76532821.

It is a happy number.

12823567 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: 76532821 = 3319 ⋅23059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12823567 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 (12823507) 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, 5317 + ... + 7342.

It is an arithmetic number, because the mean of its divisors is an integer number (3209310).

Almost surely, 2^12823567 is an apocalyptic number.

12823567 is a deficient number, since it is larger than the sum of its proper divisors (13673).

12823567 is a wasteful number, since it uses less digits than its factorization.

12823567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13672.

The product of its digits is 20160, while the sum is 34.

The square root of 12823567 is about 3581.0008377547. Note that the first 3 decimals coincide. The cubic root of 12823567 is about 234.0648942181.

The spelling of 12823567 in words is "twelve million, eight hundred twenty-three thousand, five hundred sixty-seven".