65444 has 6 divisors (see below), whose sum is σ = 114534. Its totient is φ = 32720.

The previous prime is 65437. The next prime is 65447. The reversal of 65444 is 44456.

It is a happy number.

65444 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in only one way, i.e., 52900 + 12544 = 230^2 + 112^2 .

It is a plaindrome in base 15.

It is a nialpdrome in base 4, base 10 and base 16.

It is not an unprimeable number, because it can be changed into a prime (65447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8177 + ... + 8184.

It is an arithmetic number, because the mean of its divisors is an integer number (19089).

2⁶⁵⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

65444 is a deficient number, since it is larger than the sum of its proper divisors (49090).

65444 is a wasteful number, since it uses less digits than its factorization.

65444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16365 (or 16363 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 65444 is about 255.8202493940. The cubic root of 65444 is about 40.2985987564.

The spelling of 65444 in words is "sixty-five thousand, four hundred forty-four".