12943666 has 8 divisors (see below), whose sum is σ = 19430784. Its totient is φ = 6466740.

The previous prime is 12943639. The next prime is 12943691. The reversal of 12943666 is 66634921.

It is a happy number.

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

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, 3511 + ... + 6181.

It is an arithmetic number, because the mean of its divisors is an integer number (2428848).

Almost surely, 2^12943666 is an apocalyptic number.

12943666 is a deficient number, since it is larger than the sum of its proper divisors (6487118).

12943666 is a wasteful number, since it uses less digits than its factorization.

12943666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096.

The product of its digits is 46656, while the sum is 37.

The square root of 12943666 is about 3597.7306736330. The cubic root of 12943666 is about 234.7933357368.

The spelling of 12943666 in words is "twelve million, nine hundred forty-three thousand, six hundred sixty-six".