873145 has 32 divisors (see below), whose sum is σ = 1370880. Its totient is φ = 518400.

The previous prime is 873139. The next prime is 873157. The reversal of 873145 is 541378.

It is not a de Polignac number, because 873145 - 2⁵ = 873113 is a prime.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8595 + ... + 8695.

It is an arithmetic number, because the mean of its divisors is an integer number (42840).

2⁸⁷³¹⁴⁵ is an apocalyptic number.

It is an amenable number.

873145 is a deficient number, since it is larger than the sum of its proper divisors (497735).

873145 is a wasteful number, since it uses less digits than its factorization.

873145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145.

The product of its digits is 3360, while the sum is 28.

The square root of 873145 is about 934.4222814124. The cubic root of 873145 is about 95.5789210834.

It can be divided in two parts, 8 and 73145, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 873145 in words is "eight hundred seventy-three thousand, one hundred forty-five".