871612 has 18 divisors (see below), whose sum is σ = 1774752. Its totient is φ = 373464.

The previous prime is 871597. The next prime is 871613. The reversal of 871612 is 216178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871613) 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 5 ways as a sum of consecutive naturals, for example, 2028 + ... + 2419.

2⁸⁷¹⁶¹² is an apocalyptic number.

It is an amenable number.

871612 is an abundant number, since it is smaller than the sum of its proper divisors (903140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871612 is a wasteful number, since it uses less digits than its factorization.

871612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4465 (or 4456 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 871612 is about 933.6016281048. The cubic root of 871612 is about 95.5229516393.

The spelling of 871612 in words is "eight hundred seventy-one thousand, six hundred twelve".