667284 has 24 divisors (see below), whose sum is σ = 1649088. Its totient is φ = 209280.

The previous prime is 667283. The next prime is 667309. The reversal of 667284 is 482766.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 667284.

It is not an unprimeable number, because it can be changed into a prime (667283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432 + ... + 1839.

It is an arithmetic number, because the mean of its divisors is an integer number (68712).

2⁶⁶⁷²⁸⁴ is an apocalyptic number.

It is an amenable number.

667284 is an abundant number, since it is smaller than the sum of its proper divisors (981804).

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

667284 is a wasteful number, since it uses less digits than its factorization.

667284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3295 (or 3293 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 667284 is about 816.8745313694. The cubic root of 667284 is about 87.3850026719.

Subtracting from 667284 its product of digits (16128), we obtain a palindrome (651156).

The spelling of 667284 in words is "six hundred sixty-seven thousand, two hundred eighty-four".