12875813 has 8 divisors (see below), whose sum is σ = 13125528. Its totient is φ = 12628224.

The previous prime is 12875803. The next prime is 12875839. The reversal of 12875813 is 31857821.

It can be written as a sum of positive squares in 4 ways, for example, as 1329409 + 11546404 = 1153^2 + 3398^2 .

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 12875813 - 2⁸ = 12875557 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 (12875803) 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, 16631 + ... + 17387.

It is an arithmetic number, because the mean of its divisors is an integer number (1640691).

Almost surely, 2^12875813 is an apocalyptic number.

It is an amenable number.

12875813 is a deficient number, since it is larger than the sum of its proper divisors (249715).

12875813 is an equidigital number, since it uses as much as digits as its factorization.

12875813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063.

The product of its digits is 13440, while the sum is 35.

The square root of 12875813 is about 3588.2883106016. The cubic root of 12875813 is about 234.3823405819.

The spelling of 12875813 in words is "twelve million, eight hundred seventy-five thousand, eight hundred thirteen".