12773813 has 8 divisors (see below), whose sum is σ = 13787928. Its totient is φ = 11764224.

The previous prime is 12773807. The next prime is 12773857. The reversal of 12773813 is 31837721.

It can be written as a sum of positive squares in 4 ways, for example, as 334084 + 12439729 = 578^2 + 3527^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12773813 - 2⁸ = 12773557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12773813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12773863) 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 7 ways as a sum of consecutive naturals, for example, 6881 + ... + 8537.

It is an arithmetic number, because the mean of its divisors is an integer number (1723491).

Almost surely, 2^12773813 is an apocalyptic number.

12773813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12773813 is a deficient number, since it is larger than the sum of its proper divisors (1014115).

12773813 is a wasteful number, since it uses less digits than its factorization.

12773813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263.

The product of its digits is 7056, while the sum is 32.

The square root of 12773813 is about 3574.0471457439. The cubic root of 12773813 is about 233.7617867030.

The spelling of 12773813 in words is "twelve million, seven hundred seventy-three thousand, eight hundred thirteen".