871090 has 16 divisors (see below), whose sum is σ = 1710720. Its totient is φ = 316720.

The previous prime is 871061. The next prime is 871103. The reversal of 871090 is 90178.

871090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

871090 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, 3850 + ... + 4069.

It is an arithmetic number, because the mean of its divisors is an integer number (106920).

2⁸⁷¹⁰⁹⁰ is an apocalyptic number.

871090 is a deficient number, since it is larger than the sum of its proper divisors (839630).

871090 is a wasteful number, since it uses less digits than its factorization.

871090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 871090 is about 933.3220237410. The cubic root of 871090 is about 95.5038785739.

It can be divided in two parts, 87 and 1090, that multiplied together give a triangular number (94830 = T₄₃₅).

The spelling of 871090 in words is "eight hundred seventy-one thousand, ninety".