873656 has 16 divisors (see below), whose sum is σ = 1872240. Its totient is φ = 374400.

The previous prime is 873643. The next prime is 873659. The reversal of 873656 is 656378.

It is a happy number.

873656 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 an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 873656.

It is not an unprimeable number, because it can be changed into a prime (873659) 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, 7745 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (117015).

2⁸⁷³⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

873656 is an abundant number, since it is smaller than the sum of its proper divisors (998584).

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

873656 is a wasteful number, since it uses less digits than its factorization.

873656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15614 (or 15610 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 873656 is about 934.6956723982. The cubic root of 873656 is about 95.5975630058.

The spelling of 873656 in words is "eight hundred seventy-three thousand, six hundred fifty-six".