12641847 has 4 divisors (see below), whose sum is σ = 16855800. Its totient is φ = 8427896.

The previous prime is 12641833. The next prime is 12641851. The reversal of 12641847 is 74814621.

12641847 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 12641847 - 2²⁰ = 11593271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641807) 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, 2106972 + ... + 2106977.

It is an arithmetic number, because the mean of its divisors is an integer number (4213950).

Almost surely, 2^12641847 is an apocalyptic number.

12641847 is a deficient number, since it is larger than the sum of its proper divisors (4213953).

12641847 is an equidigital number, since it uses as much as digits as its factorization.

12641847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213952.

The product of its digits is 10752, while the sum is 33.

The square root of 12641847 is about 3555.5375121070. The cubic root of 12641847 is about 232.9540024755.

The spelling of 12641847 in words is "twelve million, six hundred forty-one thousand, eight hundred forty-seven".