871630 has 16 divisors (see below), whose sum is σ = 1586304. Its totient is φ = 344800.

The previous prime is 871621. The next prime is 871639. The reversal of 871630 is 36178.

It is an interprime number because it is at equal distance from previous prime (871621) and next prime (871639).

It is a junction number, because it is equal to n+sod(n) for n = 871595 and 871604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871639) 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, 579 + ... + 1441.

It is an arithmetic number, because the mean of its divisors is an integer number (99144).

2⁸⁷¹⁶³⁰ is an apocalyptic number.

871630 is a deficient number, since it is larger than the sum of its proper divisors (714674).

871630 is a wasteful number, since it uses less digits than its factorization.

871630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 871630 is about 933.6112681411. The cubic root of 871630 is about 95.5236091954.

The spelling of 871630 in words is "eight hundred seventy-one thousand, six hundred thirty".