861150 has 24 divisors (see below), whose sum is σ = 2136024. Its totient is φ = 229600.

The previous prime is 861139. The next prime is 861163. The reversal of 861150 is 51168.

It is a congruent number.

It is an unprimeable number.

861150 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 11 ways as a sum of consecutive naturals, for example, 2721 + ... + 3020.

It is an arithmetic number, because the mean of its divisors is an integer number (89001).

2⁸⁶¹¹⁵⁰ is an apocalyptic number.

861150 is an abundant number, since it is smaller than the sum of its proper divisors (1274874).

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

861150 is a wasteful number, since it uses less digits than its factorization.

861150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756 (or 5751 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 861150 is about 927.9816808537. The cubic root of 861150 is about 95.1392233833.

The spelling of 861150 in words is "eight hundred sixty-one thousand, one hundred fifty".