286660 has 24 divisors (see below), whose sum is σ = 657216. Its totient is φ = 104160.

The previous prime is 286651. The next prime is 286673. The reversal of 286660 is 66682.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432 + ... + 871.

It is an arithmetic number, because the mean of its divisors is an integer number (27384).

2²⁸⁶⁶⁶⁰ is an apocalyptic number.

286660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286660 is an abundant number, since it is smaller than the sum of its proper divisors (370556).

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

286660 is a wasteful number, since it uses less digits than its factorization.

286660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 286660 is about 535.4063877094. The cubic root of 286660 is about 65.9359648273.

It can be divided in two parts, 2866 and 60, that added together give a triangular number (2926 = T₇₆).

The spelling of 286660 in words is "two hundred eighty-six thousand, six hundred sixty".