66244 has 6 divisors (see below), whose sum is σ = 115934. Its totient is φ = 33120.

The previous prime is 66239. The next prime is 66271. The reversal of 66244 is 44266.

It can be written as a sum of positive squares in only one way, i.e., 40000 + 26244 = 200^2 + 162^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8277 + ... + 8284.

2⁶⁶²⁴⁴ is an apocalyptic number.

It is an amenable number.

66244 is a deficient number, since it is larger than the sum of its proper divisors (49690).

66244 is a wasteful number, since it uses less digits than its factorization.

66244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16565 (or 16563 counting only the distinct ones).

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

The square root of 66244 is about 257.3790978304. The cubic root of 66244 is about 40.4621401005.

Adding to 66244 its sum of digits (22), we get a palindrome (66266).

The spelling of 66244 in words is "sixty-six thousand, two hundred forty-four".