66201 has 4 divisors (see below), whose sum is σ = 88272. Its totient is φ = 44132.

The previous prime is 66191. The next prime is 66221. The reversal of 66201 is 10266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66201 - 2⁵ = 66169 is a prime.

It is a D-number.

It is a Curzon number.

66201 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66201.

It is not an unprimeable number, because it can be changed into a prime (66221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11031 + ... + 11036.

It is an arithmetic number, because the mean of its divisors is an integer number (22068).

2⁶⁶²⁰¹ is an apocalyptic number.

It is an amenable number.

66201 is a deficient number, since it is larger than the sum of its proper divisors (22071).

66201 is a wasteful number, since it uses less digits than its factorization.

66201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22070.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 66201 is about 257.2955499032. The cubic root of 66201 is about 40.4533833395.

Adding to 66201 its reverse (10266), we get a palindrome (76467).

The spelling of 66201 in words is "sixty-six thousand, two hundred one".