12643106 has 8 divisors (see below), whose sum is σ = 21673920. Its totient is φ = 5418468.

The previous prime is 12643049. The next prime is 12643109. The reversal of 12643106 is 60134621.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (12643109) 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, 451526 + ... + 451553.

It is an arithmetic number, because the mean of its divisors is an integer number (2709240).

Almost surely, 2^12643106 is an apocalyptic number.

12643106 is a deficient number, since it is larger than the sum of its proper divisors (9030814).

12643106 is an equidigital number, since it uses as much as digits as its factorization.

12643106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903088.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12643106 is about 3555.7145554726. The cubic root of 12643106 is about 232.9617355057.

Adding to 12643106 its reverse (60134621), we get a palindrome (72777727).

The spelling of 12643106 in words is "twelve million, six hundred forty-three thousand, one hundred six".