6660201 has 8 divisors (see below), whose sum is σ = 8895744. Its totient is φ = 4432400.

The previous prime is 6660197. The next prime is 6660211. The reversal of 6660201 is 1020666.

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

It is a cyclic number.

It is not a de Polignac number, because 6660201 - 2² = 6660197 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6660211) 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, 520 + ... + 3686.

It is an arithmetic number, because the mean of its divisors is an integer number (1111968).

Almost surely, 2^6660201 is an apocalyptic number.

It is an amenable number.

6660201 is a deficient number, since it is larger than the sum of its proper divisors (2235543).

6660201 is a wasteful number, since it uses less digits than its factorization.

6660201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 6660201 is about 2580.7365227779. The cubic root of 6660201 is about 188.1463418428.

Adding to 6660201 its reverse (1020666), we get a palindrome (7680867).

The spelling of 6660201 in words is "six million, six hundred sixty thousand, two hundred one".