873636 has 24 divisors (see below), whose sum is σ = 2083200. Its totient is φ = 284832.

The previous prime is 873619. The next prime is 873641. The reversal of 873636 is 636378.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 873597 and 873606.

It is an unprimeable number.

873636 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 in 7 ways as a sum of consecutive naturals, for example, 211 + ... + 1338.

It is an arithmetic number, because the mean of its divisors is an integer number (86800).

2⁸⁷³⁶³⁶ is an apocalyptic number.

It is an amenable number.

873636 is an abundant number, since it is smaller than the sum of its proper divisors (1209564).

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

873636 is a wasteful number, since it uses less digits than its factorization.

873636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603 (or 1601 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 873636 is about 934.6849736676. The cubic root of 873636 is about 95.5968335173.

Adding to 873636 its product of digits (18144), we get a triangular number (891780 = T₁₃₃₅).

The spelling of 873636 in words is "eight hundred seventy-three thousand, six hundred thirty-six".