286664 has 16 divisors (see below), whose sum is σ = 614400. Its totient is φ = 122832.

The previous prime is 286651. The next prime is 286673. The reversal of 286664 is 466682.

It is a happy number.

286664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2⁵ + 8 + 6⁴ + 6⁴ + 6⁷ + 4⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 286664.

It is an unprimeable number.

286664 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 3 ways as a sum of consecutive naturals, for example, 2504 + ... + 2615.

It is an arithmetic number, because the mean of its divisors is an integer number (38400).

2²⁸⁶⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

286664 is an abundant number, since it is smaller than the sum of its proper divisors (327736).

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

286664 is a wasteful number, since it uses less digits than its factorization.

286664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132 (or 5128 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 286664 is about 535.4101231766. The cubic root of 286664 is about 65.9362715119.

The spelling of 286664 in words is "two hundred eighty-six thousand, six hundred sixty-four".