12706641 has 12 divisors (see below), whose sum is σ = 18408832. Its totient is φ = 8445816.

The previous prime is 12706637. The next prime is 12706691. The reversal of 12706641 is 14660721.

12706641 is a `hidden beast` number, since 12 + 7 + 0 + 6 + 641 = 666.

It is not a de Polignac number, because 12706641 - 2² = 12706637 is a prime.

It is a super-2 number, since 2×12706641² = 322917451005762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12706601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1380 + ... + 5226.

Almost surely, 2^12706641 is an apocalyptic number.

It is an amenable number.

12706641 is a deficient number, since it is larger than the sum of its proper divisors (5702191).

12706641 is a wasteful number, since it uses less digits than its factorization.

12706641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 12706641 is about 3564.6375692348. The cubic root of 12706641 is about 233.3513153942.

The spelling of 12706641 in words is "twelve million, seven hundred six thousand, six hundred forty-one".