12643827 has 8 divisors (see below), whose sum is σ = 19266816. Its totient is φ = 7225032.

The previous prime is 12643823. The next prime is 12643837. The reversal of 12643827 is 72834621.

12643827 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12643827 - 2² = 12643823 is a prime.

It is a super-2 number, since 2×12643827² = 319732722411858, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12643823) 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, 301023 + ... + 301064.

It is an arithmetic number, because the mean of its divisors is an integer number (2408352).

Almost surely, 2^12643827 is an apocalyptic number.

12643827 is a deficient number, since it is larger than the sum of its proper divisors (6622989).

12643827 is an equidigital number, since it uses as much as digits as its factorization.

12643827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602097.

The product of its digits is 16128, while the sum is 33.

The square root of 12643827 is about 3555.8159401184. The cubic root of 12643827 is about 232.9661638009.

The spelling of 12643827 in words is "twelve million, six hundred forty-three thousand, eight hundred twenty-seven".