64044 has 24 divisors (see below), whose sum is σ = 166320. Its totient is φ = 21312.

The previous prime is 64037. The next prime is 64063. The reversal of 64044 is 44046.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 404.

It is an arithmetic number, because the mean of its divisors is an integer number (6930).

2⁶⁴⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

64044 is an abundant number, since it is smaller than the sum of its proper divisors (102276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83160).

64044 is a wasteful number, since it uses less digits than its factorization.

64044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 64044 is about 253.0691605076. The cubic root of 64044 is about 40.0091645668.

The spelling of 64044 in words is "sixty-four thousand, forty-four", and thus it is an eban number.