871604 has 6 divisors (see below), whose sum is σ = 1525314. Its totient is φ = 435800.

The previous prime is 871597. The next prime is 871613. The reversal of 871604 is 406178.

871604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 487204 + 384400 = 698^2 + 620^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108947 + ... + 108954.

It is an arithmetic number, because the mean of its divisors is an integer number (254219).

2⁸⁷¹⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

871604 is a deficient number, since it is larger than the sum of its proper divisors (653710).

871604 is a wasteful number, since it uses less digits than its factorization.

871604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217905 (or 217903 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 871604 is about 933.5973436123. The cubic root of 871604 is about 95.5226593893.

The spelling of 871604 in words is "eight hundred seventy-one thousand, six hundred four".