873644 has 12 divisors (see below), whose sum is σ = 1570464. Its totient is φ = 424944.

The previous prime is 873643. The next prime is 873659. The reversal of 873644 is 446378.

It is a happy number.

873644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 8⁵ + 7⁷ + 6³ + 3⁶ + 4 + 4⁷ .

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 873644.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 873644.

It is not an unprimeable number, because it can be changed into a prime (873641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2804 + ... + 3099.

It is an arithmetic number, because the mean of its divisors is an integer number (130872).

2⁸⁷³⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

873644 is a deficient number, since it is larger than the sum of its proper divisors (696820).

873644 is a wasteful number, since it uses less digits than its factorization.

873644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944 (or 5942 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 873644 is about 934.6892531746. The cubic root of 873644 is about 95.5971253140.

The spelling of 873644 in words is "eight hundred seventy-three thousand, six hundred forty-four".