873856 has 16 divisors (see below), whose sum is σ = 1741140. Its totient is φ = 436864.

The previous prime is 873787. The next prime is 873863. The reversal of 873856 is 658378.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3286 + ... + 3541.

2⁸⁷³⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

873856 is a deficient number, since it is larger than the sum of its proper divisors (867284).

873856 is an equidigital number, since it uses as much as digits as its factorization.

873856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841 (or 6829 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 873856 is about 934.8026529701. The cubic root of 873856 is about 95.6048572779.

The spelling of 873856 in words is "eight hundred seventy-three thousand, eight hundred fifty-six".