220138065 has 48 divisors (see below), whose sum is σ = 437174400. Its totient is φ = 100382976.

The previous prime is 220138063. The next prime is 220138073. The reversal of 220138065 is 560831022.

220138065 is a `hidden beast` number, since 220 + 1 + 380 + 65 = 666.

It is not a de Polignac number, because 220138065 - 2¹ = 220138063 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220138063) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 194421 + ... + 195549.

It is an arithmetic number, because the mean of its divisors is an integer number (9107800).

Almost surely, 2^220138065 is an apocalyptic number.

It is an amenable number.

220138065 is a deficient number, since it is larger than the sum of its proper divisors (217036335).

220138065 is a wasteful number, since it uses less digits than its factorization.

220138065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 220138065 is about 14837.0504144186. The cubic root of 220138065 is about 603.8073309497.

Adding to 220138065 its reverse (560831022), we get a palindrome (780969087).

The spelling of 220138065 in words is "two hundred twenty million, one hundred thirty-eight thousand, sixty-five".