12406646 has 8 divisors (see below), whose sum is σ = 21268560. Its totient is φ = 5317128.

The previous prime is 12406633. The next prime is 12406649. The reversal of 12406646 is 64660421.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12406649) 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, 443081 + ... + 443108.

It is an arithmetic number, because the mean of its divisors is an integer number (2658570).

Almost surely, 2^12406646 is an apocalyptic number.

12406646 is a deficient number, since it is larger than the sum of its proper divisors (8861914).

12406646 is an equidigital number, since it uses as much as digits as its factorization.

12406646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886198.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 12406646 is about 3522.3069145093. The cubic root of 12406646 is about 231.5002495694.

The spelling of 12406646 in words is "twelve million, four hundred six thousand, six hundred forty-six".