14651721 has 12 divisors (see below), whose sum is σ = 24187072. Its totient is φ = 8372376.

The previous prime is 14651701. The next prime is 14651723. The reversal of 14651721 is 12715641.

It is a happy number.

14651721 is a `hidden beast` number, since 1 + 4 + 651 + 7 + 2 + 1 = 666.

It is not a de Polignac number, because 14651721 - 2⁶ = 14651657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14651723) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 116221 + ... + 116346.

Almost surely, 2^14651721 is an apocalyptic number.

It is an amenable number.

14651721 is a deficient number, since it is larger than the sum of its proper divisors (9535351).

14651721 is a wasteful number, since it uses less digits than its factorization.

14651721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232580 (or 232577 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 14651721 is about 3827.7566537072. The cubic root of 14651721 is about 244.6975081171.

The spelling of 14651721 in words is "fourteen million, six hundred fifty-one thousand, seven hundred twenty-one".