12745816 has 8 divisors (see below), whose sum is σ = 23898420. Its totient is φ = 6372904.

The previous prime is 12745813. The next prime is 12745853. The reversal of 12745816 is 61854721.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12745813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 796606 + ... + 796621.

Almost surely, 2^12745816 is an apocalyptic number.

It is an amenable number.

12745816 is a deficient number, since it is larger than the sum of its proper divisors (11152604).

12745816 is a wasteful number, since it uses less digits than its factorization.

12745816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593233 (or 1593229 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 12745816 is about 3570.1282890115. The cubic root of 12745816 is about 233.5908793430.

The spelling of 12745816 in words is "twelve million, seven hundred forty-five thousand, eight hundred sixteen".