201065 has 4 divisors (see below), whose sum is σ = 241284. Its totient is φ = 160848.

The previous prime is 201049. The next prime is 201073. The reversal of 201065 is 560102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80656 + 120409 = 284^2 + 347^2 .

It is a cyclic number.

It is not a de Polignac number, because 201065 - 2⁴ = 201049 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201065.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20102 + ... + 20111.

It is an arithmetic number, because the mean of its divisors is an integer number (60321).

2²⁰¹⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

201065 is a deficient number, since it is larger than the sum of its proper divisors (40219).

201065 is an equidigital number, since it uses as much as digits as its factorization.

201065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40218.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 201065 is about 448.4027207768. The cubic root of 201065 is about 58.5839736874.

Adding to 201065 its reverse (560102), we get a palindrome (761167).

The spelling of 201065 in words is "two hundred one thousand, sixty-five".