14216665 has 4 divisors (see below), whose sum is σ = 17060004. Its totient is φ = 11373328.

The previous prime is 14216647. The next prime is 14216681. The reversal of 14216665 is 56661241.

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 2458624 + 11758041 = 1568^2 + 3429^2 .

It is a cyclic number.

It is not a de Polignac number, because 14216665 - 2¹³ = 14208473 is a prime.

It is a super-2 number, since 2×14216665² = 404227127444450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421662 + ... + 1421671.

It is an arithmetic number, because the mean of its divisors is an integer number (4265001).

Almost surely, 2^14216665 is an apocalyptic number.

It is an amenable number.

14216665 is a deficient number, since it is larger than the sum of its proper divisors (2843339).

14216665 is an equidigital number, since it uses as much as digits as its factorization.

14216665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843338.

The product of its digits is 8640, while the sum is 31.

The square root of 14216665 is about 3770.4993038058. The cubic root of 14216665 is about 242.2511849032.

It can be divided in two parts, 142 and 16665, that added together give a 5-th power (16807 = 7⁵).

The spelling of 14216665 in words is "fourteen million, two hundred sixteen thousand, six hundred sixty-five".