12798647 has 4 divisors (see below), whose sum is σ = 13472280. Its totient is φ = 12125016.

The previous prime is 12798641. The next prime is 12798661. The reversal of 12798647 is 74689721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12798647 - 2¹⁰ = 12797623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12798598 and 12798607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12798641) 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 3 ways as a sum of consecutive naturals, for example, 336788 + ... + 336825.

It is an arithmetic number, because the mean of its divisors is an integer number (3368070).

Almost surely, 2^12798647 is an apocalyptic number.

12798647 is a deficient number, since it is larger than the sum of its proper divisors (673633).

12798647 is an equidigital number, since it uses as much as digits as its factorization.

12798647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673632.

The product of its digits is 169344, while the sum is 44.

The square root of 12798647 is about 3577.5196715043. The cubic root of 12798647 is about 233.9131766916.

The spelling of 12798647 in words is "twelve million, seven hundred ninety-eight thousand, six hundred forty-seven".