662844 has 48 divisors (see below), whose sum is σ = 1906688. Its totient is φ = 174528.

The previous prime is 662843. The next prime is 662867. The reversal of 662844 is 448266.

662844 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 (662843) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789 + ... + 1395.

2⁶⁶²⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953344).

662844 is an abundant number, since it is smaller than the sum of its proper divisors (1243844).

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

662844 is a wasteful number, since it uses less digits than its factorization.

662844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 632 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 662844 is about 814.1523199009. The cubic root of 662844 is about 87.1907559710.

The spelling of 662844 in words is "six hundred sixty-two thousand, eight hundred forty-four".