656944 has 20 divisors (see below), whose sum is σ = 1340440. Its totient is φ = 311040.

The previous prime is 656939. The next prime is 656951. The reversal of 656944 is 449656.

It is an unprimeable number.

656944 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777 + ... + 1384.

It is an arithmetic number, because the mean of its divisors is an integer number (67022).

2⁶⁵⁶⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

656944 is an abundant number, since it is smaller than the sum of its proper divisors (683496).

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

656944 is a wasteful number, since it uses less digits than its factorization.

656944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188 (or 2182 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 656944 is about 810.5208202138. The cubic root of 656944 is about 86.9312885046.

It can be divided in two parts, 656 and 944, that added together give a square (1600 = 40²).

The spelling of 656944 in words is "six hundred fifty-six thousand, nine hundred forty-four".