12641406 has 8 divisors (see below), whose sum is σ = 25282824. Its totient is φ = 4213800.

The previous prime is 12641381. The next prime is 12641411. The reversal of 12641406 is 60414621.

12641406 is digitally balanced in base 2, 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.

12641406 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053445 + ... + 1053456.

It is an arithmetic number, because the mean of its divisors is an integer number (3160353).

Almost surely, 2^12641406 is an apocalyptic number.

12641406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12641406 is a wasteful number, since it uses less digits than its factorization.

12641406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106906.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 12641406 is about 3555.4754956264. The cubic root of 12641406 is about 232.9512936437.

The spelling of 12641406 in words is "twelve million, six hundred forty-one thousand, four hundred six".