12806963 has 4 divisors (see below), whose sum is σ = 13792128. Its totient is φ = 11821800.

The previous prime is 12806957. The next prime is 12806971. The reversal of 12806963 is 36960821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36960821 = 227 ⋅162823.

It is a cyclic number.

It is not a de Polignac number, because 12806963 - 2⁸ = 12806707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12806903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492563 + ... + 492588.

It is an arithmetic number, because the mean of its divisors is an integer number (3448032).

Almost surely, 2^12806963 is an apocalyptic number.

12806963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12806963 is a deficient number, since it is larger than the sum of its proper divisors (985165).

12806963 is an equidigital number, since it uses as much as digits as its factorization.

12806963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985164.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12806963 is about 3578.6817405296. The cubic root of 12806963 is about 233.9638279004.

The spelling of 12806963 in words is "twelve million, eight hundred six thousand, nine hundred sixty-three".