57644 has 6 divisors (see below), whose sum is σ = 100884. Its totient is φ = 28820.

The previous prime is 57641. The next prime is 57649. The reversal of 57644 is 44675.

57644 is nontrivially palindromic in base 3.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 57644.

It is not an unprimeable number, because it can be changed into a prime (57641) 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 as a sum of consecutive naturals, namely, 7202 + ... + 7209.

It is an arithmetic number, because the mean of its divisors is an integer number (16814).

57644 is a Friedman number, since it can be written as (7^4*6+5)*4, using all its digits and the basic arithmetic operations.

2⁵⁷⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

57644 is a deficient number, since it is larger than the sum of its proper divisors (43240).

57644 is a wasteful number, since it uses less digits than its factorization.

57644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14415 (or 14413 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 57644 is about 240.0916491676. The cubic root of 57644 is about 38.6294065695.

The spelling of 57644 in words is "fifty-seven thousand, six hundred forty-four".