663201 has 48 divisors (see below), whose sum is σ = 1276800. Its totient is φ = 332640.

The previous prime is 663191. The next prime is 663203. The reversal of 663201 is 102366.

It is a happy number.

663201 is a `hidden beast` number, since 663 + 2 + 0 + 1 = 666.

It is not a de Polignac number, because 663201 - 2⁹ = 662689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22855 + ... + 22883.

It is an arithmetic number, because the mean of its divisors is an integer number (26600).

2⁶⁶³²⁰¹ is an apocalyptic number.

It is an amenable number.

663201 is a deficient number, since it is larger than the sum of its proper divisors (613599).

663201 is a wasteful number, since it uses less digits than its factorization.

663201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 663201 is about 814.3715368307. The cubic root of 663201 is about 87.2064064676.

Adding to 663201 its reverse (102366), we get a palindrome (765567).

The spelling of 663201 in words is "six hundred sixty-three thousand, two hundred one".