14646221 has 4 divisors (see below), whose sum is σ = 14780700. Its totient is φ = 14511744.

The previous prime is 14646217. The next prime is 14646227. The reversal of 14646221 is 12264641.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8934121 + 5712100 = 2989^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 14646221 - 2² = 14646217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14646227) 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, 67076 + ... + 67293.

It is an arithmetic number, because the mean of its divisors is an integer number (3695175).

Almost surely, 2^14646221 is an apocalyptic number.

It is an amenable number.

14646221 is a deficient number, since it is larger than the sum of its proper divisors (134479).

14646221 is a wasteful number, since it uses less digits than its factorization.

14646221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134478.

The product of its digits is 2304, while the sum is 26.

The square root of 14646221 is about 3827.0381497968. The cubic root of 14646221 is about 244.6668858958. Note that the first 3 decimals are identical.

The spelling of 14646221 in words is "fourteen million, six hundred forty-six thousand, two hundred twenty-one".