873566 has 8 divisors (see below), whose sum is σ = 1314984. Its totient is φ = 435240.

The previous prime is 873553. The next prime is 873569. The reversal of 873566 is 665378.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161 + ... + 1331.

It is an arithmetic number, because the mean of its divisors is an integer number (164373).

2⁸⁷³⁵⁶⁶ is an apocalyptic number.

873566 is a deficient number, since it is larger than the sum of its proper divisors (441418).

873566 is a wasteful number, since it uses less digits than its factorization.

873566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546.

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

The square root of 873566 is about 934.6475271459. The cubic root of 873566 is about 95.5942802201.

The spelling of 873566 in words is "eight hundred seventy-three thousand, five hundred sixty-six".