14220665 has 4 divisors (see below), whose sum is σ = 17064804. Its totient is φ = 11376528.

The previous prime is 14220631. The next prime is 14220667. The reversal of 14220665 is 56602241.

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 7166329 + 7054336 = 2677^2 + 2656^2 .

It is a cyclic number.

It is not a de Polignac number, because 14220665 - 2¹⁶ = 14155129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14220667) 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, 1422062 + ... + 1422071.

It is an arithmetic number, because the mean of its divisors is an integer number (4266201).

Almost surely, 2^14220665 is an apocalyptic number.

It is an amenable number.

14220665 is a deficient number, since it is larger than the sum of its proper divisors (2844139).

14220665 is an equidigital number, since it uses as much as digits as its factorization.

14220665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844138.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 14220665 is about 3771.0297002278. The cubic root of 14220665 is about 242.2739026989.

The spelling of 14220665 in words is "fourteen million, two hundred twenty thousand, six hundred sixty-five".