666052 has 12 divisors (see below), whose sum is σ = 1182076. Its totient is φ = 328320.

The previous prime is 666041. The next prime is 666067. The reversal of 666052 is 250666.

It can be written as a sum of positive squares in 2 ways, for example, as 389376 + 276676 = 624^2 + 526^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 9.

It is an unprimeable number.

666052 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, 849 + ... + 1432.

2⁶⁶⁶⁰⁵² is an apocalyptic number.

It is an amenable number.

666052 is a deficient number, since it is larger than the sum of its proper divisors (516024).

666052 is a wasteful number, since it uses less digits than its factorization.

666052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 666052 is about 816.1200892026. The cubic root of 666052 is about 87.3311901785.

The spelling of 666052 in words is "six hundred sixty-six thousand, fifty-two".