666283 has 4 divisors (see below), whose sum is σ = 687808. Its totient is φ = 644760.

The previous prime is 666277. The next prime is 666301. The reversal of 666283 is 382666.

666283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 21493 = 666283 / (6 + 6 + 6 + 2 + 8 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666203) 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, 10716 + ... + 10777.

It is an arithmetic number, because the mean of its divisors is an integer number (171952).

2⁶⁶⁶²⁸³ is an apocalyptic number.

666283 is a deficient number, since it is larger than the sum of its proper divisors (21525).

666283 is a wasteful number, since it uses less digits than its factorization.

666283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21524.

The product of its digits is 10368, while the sum is 31.

The square root of 666283 is about 816.2616002238. The cubic root of 666283 is about 87.3412850726.

It can be divided in two parts, 666 and 283, that added together give a palindrome (949).

The spelling of 666283 in words is "six hundred sixty-six thousand, two hundred eighty-three".