666152 has 8 divisors (see below), whose sum is σ = 1249050. Its totient is φ = 333072.

The previous prime is 666143. The next prime is 666167. The reversal of 666152 is 251666.

It can be written as a sum of positive squares in only one way, i.e., 401956 + 264196 = 634^2 + 514^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

666152 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 41627 + ... + 41642.

2⁶⁶⁶¹⁵² is an apocalyptic number.

It is an amenable number.

666152 is a deficient number, since it is larger than the sum of its proper divisors (582898).

666152 is a wasteful number, since it uses less digits than its factorization.

666152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83275 (or 83271 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 666152 is about 816.1813523966. The cubic root of 666152 is about 87.3355605490.

It can be divided in two parts, 666 and 152, that added together give a palindrome (818).

The spelling of 666152 in words is "six hundred sixty-six thousand, one hundred fifty-two".