20140065 has 96 divisors (see below), whose sum is σ = 41783040. Its totient is φ = 8870400.

The previous prime is 20140031. The next prime is 20140067. The reversal of 20140065 is 56004102.

It is a happy number.

20140065 is a `hidden beast` number, since 201 + 400 + 65 = 666.

It is not a de Polignac number, because 20140065 - 2⁷ = 20139937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20140067) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 330135 + ... + 330195.

It is an arithmetic number, because the mean of its divisors is an integer number (435240).

Almost surely, 2^20140065 is an apocalyptic number.

It is an amenable number.

20140065 is an abundant number, since it is smaller than the sum of its proper divisors (21642975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20140065 is a wasteful number, since it uses less digits than its factorization.

20140065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20140065 is about 4487.7683763759. The cubic root of 20140065 is about 272.0739463382.

Adding to 20140065 its reverse (56004102), we get a palindrome (76144167).

The spelling of 20140065 in words is "twenty million, one hundred forty thousand, sixty-five".