864846 has 24 divisors (see below), whose sum is σ = 1956240. Its totient is φ = 275616.

The previous prime is 864817. The next prime is 864883. The reversal of 864846 is 648468.

864846 is a `hidden beast` number, since 8 + 648 + 4 + 6 = 666.

864846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 864846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 631 + ... + 1458.

It is an arithmetic number, because the mean of its divisors is an integer number (81510).

2⁸⁶⁴⁸⁴⁶ is an apocalyptic number.

864846 is an abundant number, since it is smaller than the sum of its proper divisors (1091394).

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

864846 is a wasteful number, since it uses less digits than its factorization.

864846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2117 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 864846 is about 929.9709672888. The cubic root of 864846 is about 95.2751395812.

The spelling of 864846 in words is "eight hundred sixty-four thousand, eight hundred forty-six".