12775816 has 16 divisors (see below), whose sum is σ = 24512400. Its totient is φ = 6239184.

The previous prime is 12775783. The next prime is 12775817. The reversal of 12775816 is 61857721.

It is not an unprimeable number, because it can be changed into a prime (12775817) 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, 18226 + ... + 18913.

It is an arithmetic number, because the mean of its divisors is an integer number (1532025).

Almost surely, 2^12775816 is an apocalyptic number.

It is an amenable number.

12775816 is a deficient number, since it is larger than the sum of its proper divisors (11736584).

12775816 is a wasteful number, since it uses less digits than its factorization.

12775816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37188 (or 37184 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 12775816 is about 3574.3273493064. The cubic root of 12775816 is about 233.7740044171.

The spelling of 12775816 in words is "twelve million, seven hundred seventy-five thousand, eight hundred sixteen".