864486 has 32 divisors (see below), whose sum is σ = 2196480. Its totient is φ = 246888.

The previous prime is 864449. The next prime is 864491. The reversal of 864486 is 684468.

864486 is a `hidden beast` number, since 8 + 644 + 8 + 6 = 666.

864486 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 864486.

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 864486.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 766 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (68640).

2⁸⁶⁴⁴⁸⁶ is an apocalyptic number.

864486 is an abundant number, since it is smaller than the sum of its proper divisors (1331994).

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

864486 is a wasteful number, since it uses less digits than its factorization.

864486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305 (or 2299 counting only the distinct ones).

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

The square root of 864486 is about 929.7773927129. Note that the first 3 decimals coincide. The cubic root of 864486 is about 95.2619180325.

It can be divided in two parts, 864 and 486, that multiplied together give a square (419904 = 648²).

The spelling of 864486 in words is "eight hundred sixty-four thousand, four hundred eighty-six".