12049666 has 4 divisors (see below), whose sum is σ = 18074502. Its totient is φ = 6024832.

The previous prime is 12049657. The next prime is 12049673. The reversal of 12049666 is 66694021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11417641 + 632025 = 3379^2 + 795^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3012415 + ... + 3012418.

Almost surely, 2^12049666 is an apocalyptic number.

12049666 is a deficient number, since it is larger than the sum of its proper divisors (6024836).

12049666 is an equidigital number, since it uses as much as digits as its factorization.

12049666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6024835.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 12049666 is about 3471.2628825832. The cubic root of 12049666 is about 229.2582658544.

The spelling of 12049666 in words is "twelve million, forty-nine thousand, six hundred sixty-six".