660286 has 8 divisors (see below), whose sum is σ = 1080504. Its totient is φ = 300120.

The previous prime is 660281. The next prime is 660299. The reversal of 660286 is 682066.

It is a happy number.

660286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660281) 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, 14985 + ... + 15028.

It is an arithmetic number, because the mean of its divisors is an integer number (135063).

2⁶⁶⁰²⁸⁶ is an apocalyptic number.

660286 is a deficient number, since it is larger than the sum of its proper divisors (420218).

660286 is a wasteful number, since it uses less digits than its factorization.

660286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30026.

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

The square root of 660286 is about 812.5798422309. The cubic root of 660286 is about 87.0784512778.

It can be divided in two parts, 660 and 286, that added together give a triangular number (946 = T₄₃).

The spelling of 660286 in words is "six hundred sixty thousand, two hundred eighty-six".