844668 has 72 divisors (see below), whose sum is σ = 2446080. Its totient is φ = 252720.

The previous prime is 844651. The next prime is 844709. The reversal of 844668 is 866448.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

844668 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 23 ways as a sum of consecutive naturals, for example, 10653 + ... + 10731.

2⁸⁴⁴⁶⁶⁸ 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 844668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223040).

844668 is an abundant number, since it is smaller than the sum of its proper divisors (1601412).

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

844668 is a wasteful number, since it uses less digits than its factorization.

844668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 95 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 844668 is about 919.0582136078. The cubic root of 844668 is about 94.5283361736.

The spelling of 844668 in words is "eight hundred forty-four thousand, six hundred sixty-eight".