286669 has 4 divisors (see below), whose sum is σ = 289980. Its totient is φ = 283360.

The previous prime is 286651. The next prime is 286673. The reversal of 286669 is 966682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 136900 + 149769 = 370^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 286669 - 2⁷ = 286541 is a prime.

It is a super-2 number, since 2×286669² = 164358231122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (72495).

2²⁸⁶⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

286669 is a deficient number, since it is larger than the sum of its proper divisors (3311).

286669 is an equidigital number, since it uses as much as digits as its factorization.

286669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310.

The product of its digits is 31104, while the sum is 37.

The square root of 286669 is about 535.4147924740. The cubic root of 286669 is about 65.9366548636.

The spelling of 286669 in words is "two hundred eighty-six thousand, six hundred sixty-nine".