667180 has 12 divisors (see below), whose sum is σ = 1401120. Its totient is φ = 266864.

The previous prime is 667171. The next prime is 667181. The reversal of 667180 is 81766.

It is not an unprimeable number, because it can be changed into a prime (667181) by changing a digit.

667180 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16660 + ... + 16699.

It is an arithmetic number, because the mean of its divisors is an integer number (116760).

2⁶⁶⁷¹⁸⁰ is an apocalyptic number.

It is an amenable number.

667180 is an abundant number, since it is smaller than the sum of its proper divisors (733940).

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

667180 is a wasteful number, since it uses less digits than its factorization.

667180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33368 (or 33366 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 667180 is about 816.8108716221. The cubic root of 667180 is about 87.3804626197.

The spelling of 667180 in words is "six hundred sixty-seven thousand, one hundred eighty".