804644 has 12 divisors (see below), whose sum is σ = 1491084. Its totient is φ = 378624.

The previous prime is 804619. The next prime is 804653. The reversal of 804644 is 446408.

It can be written as a sum of positive squares in 2 ways, for example, as 702244 + 102400 = 838^2 + 320^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 804644.

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, 5849 + ... + 5984.

It is an arithmetic number, because the mean of its divisors is an integer number (124257).

2⁸⁰⁴⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

804644 is a deficient number, since it is larger than the sum of its proper divisors (686440).

804644 is a wasteful number, since it uses less digits than its factorization.

804644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11854 (or 11852 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 804644 is about 897.0195092639. The cubic root of 804644 is about 93.0110596937.

The spelling of 804644 in words is "eight hundred four thousand, six hundred forty-four".