65944 has 8 divisors (see below), whose sum is σ = 123660. Its totient is φ = 32968.

The previous prime is 65929. The next prime is 65951. The reversal of 65944 is 44956.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×65944² = 8697222272, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

65944 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 4114 + ... + 4129.

2⁶⁵⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

65944 is a deficient number, since it is larger than the sum of its proper divisors (57716).

65944 is a wasteful number, since it uses less digits than its factorization.

65944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8249 (or 8245 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 65944 is about 256.7956385922. The cubic root of 65944 is about 40.4009672023.

It can be divided in two parts, 659 and 44, that added together give a triangular number (703 = T₃₇).

The spelling of 65944 in words is "sixty-five thousand, nine hundred forty-four".