12837813 has 8 divisors (see below), whose sum is σ = 17669376. Its totient is φ = 8282400.

The previous prime is 12837809. The next prime is 12837821. The reversal of 12837813 is 31873821.

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

It is not a de Polignac number, because 12837813 - 2² = 12837809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12837823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68928 + ... + 69113.

It is an arithmetic number, because the mean of its divisors is an integer number (2208672).

Almost surely, 2^12837813 is an apocalyptic number.

It is an amenable number.

12837813 is a deficient number, since it is larger than the sum of its proper divisors (4831563).

12837813 is a wasteful number, since it uses less digits than its factorization.

12837813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138075.

The product of its digits is 8064, while the sum is 33.

The square root of 12837813 is about 3582.9893943466. The cubic root of 12837813 is about 234.1515381932.

The spelling of 12837813 in words is "twelve million, eight hundred thirty-seven thousand, eight hundred thirteen".