873812 has 6 divisors (see below), whose sum is σ = 1529178. Its totient is φ = 436904.

The previous prime is 873787. The next prime is 873863. The reversal of 873812 is 218378.

873812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 835396 + 38416 = 914^2 + 196^2 .

It is a super-2 number, since 2×873812² = 1527094822688, which contains 22 as substring.

It is a nialpdrome in base 4 and base 16.

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 873812.

It is an unprimeable number.

873812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109223 + ... + 109230.

It is an arithmetic number, because the mean of its divisors is an integer number (254863).

2⁸⁷³⁸¹² is an apocalyptic number.

It is an amenable number.

873812 is a deficient number, since it is larger than the sum of its proper divisors (655366).

873812 is a wasteful number, since it uses less digits than its factorization.

873812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218457 (or 218455 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 873812 is about 934.7791182948. The cubic root of 873812 is about 95.6032526335.

The spelling of 873812 in words is "eight hundred seventy-three thousand, eight hundred twelve".