844666 has 8 divisors (see below), whose sum is σ = 1275264. Its totient is φ = 419580.

The previous prime is 844651. The next prime is 844709. The reversal of 844666 is 666448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970 + ... + 1621.

It is an arithmetic number, because the mean of its divisors is an integer number (159408).

2⁸⁴⁴⁶⁶⁶ is an apocalyptic number.

844666 is a deficient number, since it is larger than the sum of its proper divisors (430598).

844666 is a wasteful number, since it uses less digits than its factorization.

844666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756.

The product of its digits is 27648, while the sum is 34.

The square root of 844666 is about 919.0571255368. The cubic root of 844666 is about 94.5282615657.

The spelling of 844666 in words is "eight hundred forty-four thousand, six hundred sixty-six".