12723666 has 8 divisors (see below), whose sum is σ = 25447344. Its totient is φ = 4241220.

The previous prime is 12723649. The next prime is 12723709. The reversal of 12723666 is 66632721.

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

12723666 is an admirable 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, 1060300 + ... + 1060311.

It is an arithmetic number, because the mean of its divisors is an integer number (3180918).

Almost surely, 2^12723666 is an apocalyptic number.

12723666 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.

12723666 is a wasteful number, since it uses less digits than its factorization.

12723666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120616.

The product of its digits is 18144, while the sum is 33.

The square root of 12723666 is about 3567.0248106791. The cubic root of 12723666 is about 233.4554875129.

The spelling of 12723666 in words is "twelve million, seven hundred twenty-three thousand, six hundred sixty-six".