660201 has 8 divisors (see below), whose sum is σ = 884160. Its totient is φ = 438192.

The previous prime is 660199. The next prime is 660217. The reversal of 660201 is 102066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660201 - 2¹ = 660199 is a prime.

660201 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (110520).

2⁶⁶⁰²⁰¹ is an apocalyptic number.

It is an amenable number.

660201 is a deficient number, since it is larger than the sum of its proper divisors (223959).

660201 is a wasteful number, since it uses less digits than its factorization.

660201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

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

The square root of 660201 is about 812.5275379949. The cubic root of 660201 is about 87.0747145203.

Adding to 660201 its reverse (102066), we get a palindrome (762267).

It can be divided in two parts, 660 and 201, that added together give a triangular number (861 = T₄₁).

The spelling of 660201 in words is "six hundred sixty thousand, two hundred one".