13140065 has 8 divisors (see below), whose sum is σ = 16695720. Its totient is φ = 9893632.

The previous prime is 13140047. The next prime is 13140079. The reversal of 13140065 is 56004131.

It can be written as a sum of positive squares in 4 ways, for example, as 3211264 + 9928801 = 1792^2 + 3151^2 .

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 13140065 - 2¹⁴ = 13123681 is a prime.

It is a super-2 number, since 2×13140065² = 345322616408450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77210 + ... + 77379.

It is an arithmetic number, because the mean of its divisors is an integer number (2086965).

Almost surely, 2^13140065 is an apocalyptic number.

It is an amenable number.

13140065 is a deficient number, since it is larger than the sum of its proper divisors (3555655).

13140065 is a wasteful number, since it uses less digits than its factorization.

13140065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154611.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 13140065 is about 3624.9227577977. The cubic root of 13140065 is about 235.9749147425.

Adding to 13140065 its reverse (56004131), we get a palindrome (69144196).

The spelling of 13140065 in words is "thirteen million, one hundred forty thousand, sixty-five".