14805721 has 8 divisors (see below), whose sum is σ = 17656704. Its totient is φ = 12138720.

The previous prime is 14805677. The next prime is 14805733. The reversal of 14805721 is 12750841.

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

It is a cyclic number.

It is not a de Polignac number, because 14805721 - 2⁹ = 14805209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14805721.

It is not an unprimeable number, because it can be changed into a prime (14805121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45820 + ... + 46141.

It is an arithmetic number, because the mean of its divisors is an integer number (2207088).

Almost surely, 2^14805721 is an apocalyptic number.

It is an amenable number.

14805721 is a deficient number, since it is larger than the sum of its proper divisors (2850983).

14805721 is an equidigital number, since it uses as much as digits as its factorization.

14805721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91991.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 14805721 is about 3847.8202920615. The cubic root of 14805721 is about 245.5518367732.

The spelling of 14805721 in words is "fourteen million, eight hundred five thousand, seven hundred twenty-one".