12870791 has 4 divisors (see below), whose sum is σ = 13089000. Its totient is φ = 12652584.

The previous prime is 12870779. The next prime is 12870799. The reversal of 12870791 is 19707821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19707821 = 7 ⋅2815403.

It is a cyclic number.

It is not a de Polignac number, because 12870791 - 2¹⁴ = 12854407 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 (12870799) 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, 109016 + ... + 109133.

It is an arithmetic number, because the mean of its divisors is an integer number (3272250).

Almost surely, 2^12870791 is an apocalyptic number.

12870791 is a deficient number, since it is larger than the sum of its proper divisors (218209).

12870791 is an equidigital number, since it uses as much as digits as its factorization.

12870791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218208.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 12870791 is about 3587.5884658082. The cubic root of 12870791 is about 234.3518642881.

The spelling of 12870791 in words is "twelve million, eight hundred seventy thousand, seven hundred ninety-one".