660244 has 12 divisors (see below), whose sum is σ = 1244404. Its totient is φ = 304704.

The previous prime is 660241. The next prime is 660251. The reversal of 660244 is 442066.

It can be written as a sum of positive squares in 2 ways, for example, as 115600 + 544644 = 340^2 + 738^2 .

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6297 + ... + 6400.

2⁶⁶⁰²⁴⁴ is an apocalyptic number.

It is an amenable number.

660244 is a deficient number, since it is larger than the sum of its proper divisors (584160).

660244 is a wasteful number, since it uses less digits than its factorization.

660244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714 (or 12712 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 660244 is about 812.5539982057. The cubic root of 660244 is about 87.0766049201.

The spelling of 660244 in words is "six hundred sixty thousand, two hundred forty-four".