14640005 has 8 divisors (see below), whose sum is σ = 17637912. Its totient is φ = 11665408.

The previous prime is 14639971. The next prime is 14640023. The reversal of 14640005 is 50004641.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7230721 + 7409284 = 2689^2 + 2722^2 .

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 14640005 - 2⁸ = 14639749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4412 + ... + 6981.

It is an arithmetic number, because the mean of its divisors is an integer number (2204739).

Almost surely, 2^14640005 is an apocalyptic number.

It is an amenable number.

14640005 is a deficient number, since it is larger than the sum of its proper divisors (2997907).

14640005 is a wasteful number, since it uses less digits than its factorization.

14640005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11655.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 14640005 is about 3826.2259473272. The cubic root of 14640005 is about 244.6322679884.

Adding to 14640005 its reverse (50004641), we get a palindrome (64644646).

The spelling of 14640005 in words is "fourteen million, six hundred forty thousand, five".