873645 has 8 divisors (see below), whose sum is σ = 1397856. Its totient is φ = 465936.

The previous prime is 873643. The next prime is 873659. The reversal of 873645 is 546378.

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

It is not a de Polignac number, because 873645 - 2¹ = 873643 is a prime.

It is a super-3 number, since 3×873645³ = 2000443279358433375, which contains 333 as substring.

It is a d-powerful number, because it can be written as 8⁵ + 7⁷ + 6³ + 3⁶ + 4⁷ + 5 .

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 873645.

It is not an unprimeable number, because it can be changed into a prime (873641) 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 7 ways as a sum of consecutive naturals, for example, 29107 + ... + 29136.

It is an arithmetic number, because the mean of its divisors is an integer number (174732).

2⁸⁷³⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

873645 is a deficient number, since it is larger than the sum of its proper divisors (524211).

873645 is a wasteful number, since it uses less digits than its factorization.

873645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58251.

The product of its digits is 20160, while the sum is 33.

The square root of 873645 is about 934.6897881115. The cubic root of 873645 is about 95.5971617885.

The spelling of 873645 in words is "eight hundred seventy-three thousand, six hundred forty-five".