14666921 has 4 divisors (see below), whose sum is σ = 14706000. Its totient is φ = 14627844.

The previous prime is 14666909. The next prime is 14666923. The reversal of 14666921 is 12966641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 14666921 - 2⁶ = 14666857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14666923) 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, 18971 + ... + 19728.

It is an arithmetic number, because the mean of its divisors is an integer number (3676500).

Almost surely, 2^14666921 is an apocalyptic number.

It is an amenable number.

14666921 is a deficient number, since it is larger than the sum of its proper divisors (39079).

14666921 is an equidigital number, since it uses as much as digits as its factorization.

14666921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39078.

The product of its digits is 15552, while the sum is 35.

The square root of 14666921 is about 3829.7416361943. The cubic root of 14666921 is about 244.7820969667.

The spelling of 14666921 in words is "fourteen million, six hundred sixty-six thousand, nine hundred twenty-one".