14005665 has 12 divisors (see below), whose sum is σ = 24276564. Its totient is φ = 7469664.

The previous prime is 14005619. The next prime is 14005697. The reversal of 14005665 is 56650041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4064256 + 9941409 = 2016^2 + 3153^2 .

It is not a de Polignac number, because 14005665 - 2⁶ = 14005601 is a prime.

It is an unprimeable number.

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, 155574 + ... + 155663.

It is an arithmetic number, because the mean of its divisors is an integer number (2023047).

Almost surely, 2^14005665 is an apocalyptic number.

14005665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

14005665 is a deficient number, since it is larger than the sum of its proper divisors (10270899).

14005665 is a wasteful number, since it uses less digits than its factorization.

14005665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311248 (or 311245 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 14005665 is about 3742.4143276767. The cubic root of 14005665 is about 241.0467302622.

The spelling of 14005665 in words is "fourteen million, five thousand, six hundred sixty-five".