744656 has 20 divisors (see below), whose sum is σ = 1574304. Its totient is φ = 338400.

The previous prime is 744649. The next prime is 744659. The reversal of 744656 is 656447.

744656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744659) by changing a digit.

744656 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, 1940 + ... + 2291.

2⁷⁴⁴⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

744656 is an abundant number, since it is smaller than the sum of its proper divisors (829648).

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

744656 is a wasteful number, since it uses less digits than its factorization.

744656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250 (or 4244 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 744656 is about 862.9345282233. The cubic root of 744656 is about 90.6397219048.

Subtracting from 744656 its reverse (656447), we obtain a square (88209 = 297²).

The spelling of 744656 in words is "seven hundred forty-four thousand, six hundred fifty-six".