861244 has 12 divisors (see below), whose sum is σ = 1519000. Its totient is φ = 427248.

The previous prime is 861239. The next prime is 861293. The reversal of 861244 is 442168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219 + ... + 1330.

2⁸⁶¹²⁴⁴ is an apocalyptic number.

It is an amenable number.

861244 is a deficient number, since it is larger than the sum of its proper divisors (657756).

861244 is a wasteful number, since it uses less digits than its factorization.

861244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692 (or 1690 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 861244 is about 928.0323270231. The cubic root of 861244 is about 95.1426849412.

The spelling of 861244 in words is "eight hundred sixty-one thousand, two hundred forty-four".