13662005 has 8 divisors (see below), whose sum is σ = 18736512. Its totient is φ = 9368208.

The previous prime is 13661971. The next prime is 13662013. The reversal of 13662005 is 50026631.

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 13662005 - 2⁶ = 13661941 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 195137 + ... + 195206.

It is an arithmetic number, because the mean of its divisors is an integer number (2342064).

Almost surely, 2^13662005 is an apocalyptic number.

It is an amenable number.

13662005 is a deficient number, since it is larger than the sum of its proper divisors (5074507).

13662005 is an equidigital number, since it uses as much as digits as its factorization.

13662005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390355.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 13662005 is about 3696.2149558704. The cubic root of 13662005 is about 239.0588430244.

Adding to 13662005 its reverse (50026631), we get a palindrome (63688636).

The spelling of 13662005 in words is "thirteen million, six hundred sixty-two thousand, five".