12760813 has 4 divisors (see below), whose sum is σ = 13742428. Its totient is φ = 11779200.

The previous prime is 12760801. The next prime is 12760817. The reversal of 12760813 is 31806721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31806721 = 2423 ⋅13127.

It can be written as a sum of positive squares in 2 ways, for example, as 6620329 + 6140484 = 2573^2 + 2478^2 .

It is a cyclic number.

It is not a de Polignac number, because 12760813 - 2²¹ = 10663661 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 (12760817) 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, 490788 + ... + 490813.

It is an arithmetic number, because the mean of its divisors is an integer number (3435607).

Almost surely, 2^12760813 is an apocalyptic number.

12760813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12760813 is a deficient number, since it is larger than the sum of its proper divisors (981615).

12760813 is an equidigital number, since it uses as much as digits as its factorization.

12760813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981614.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12760813 is about 3572.2280162386. The cubic root of 12760813 is about 233.6824594440.

The spelling of 12760813 in words is "twelve million, seven hundred sixty thousand, eight hundred thirteen".