666122 has 8 divisors (see below), whose sum is σ = 1013472. Its totient is φ = 328300.

The previous prime is 666119. The next prime is 666139. The reversal of 666122 is 221666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2204 + ... + 2487.

It is an arithmetic number, because the mean of its divisors is an integer number (126684).

2⁶⁶⁶¹²² is an apocalyptic number.

666122 is a deficient number, since it is larger than the sum of its proper divisors (347350).

666122 is a wasteful number, since it uses less digits than its factorization.

666122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764.

The product of its digits is 864, while the sum is 23.

The square root of 666122 is about 816.1629739213. The cubic root of 666122 is about 87.3342494837.

Adding to 666122 its reverse (221666), we get a palindrome (887788).

The spelling of 666122 in words is "six hundred sixty-six thousand, one hundred twenty-two".