861846 has 12 divisors (see below), whose sum is σ = 1728252. Its totient is φ = 286524.

The previous prime is 861829. The next prime is 861853. The reversal of 861846 is 648168.

861846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (9216) is a multiple of the sum of its prime divisors (384).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 861846.

It is an unprimeable number.

861846 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 5 ways as a sum of consecutive naturals, for example, 2085 + ... + 2463.

It is an arithmetic number, because the mean of its divisors is an integer number (144021).

2⁸⁶¹⁸⁴⁶ is an apocalyptic number.

861846 is an abundant number, since it is smaller than the sum of its proper divisors (866406).

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

861846 is an equidigital number, since it uses as much as digits as its factorization.

861846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 384 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 861846 is about 928.3566125148. The cubic root of 861846 is about 95.1648476718.

The spelling of 861846 in words is "eight hundred sixty-one thousand, eight hundred forty-six".