666166052 has 12 divisors (see below), whose sum is σ = 1166215680. Its totient is φ = 332961576.

The previous prime is 666166031. The next prime is 666166069. The reversal of 666166052 is 250661666.

666166052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 666165997 and 666166015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17408 + ... + 40439.

It is an arithmetic number, because the mean of its divisors is an integer number (97184640).

Almost surely, 2^666166052 is an apocalyptic number.

It is an amenable number.

666166052 is a deficient number, since it is larger than the sum of its proper divisors (500049628).

666166052 is a wasteful number, since it uses less digits than its factorization.

666166052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60730 (or 60728 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 666166052 is about 25810.1927927708. The cubic root of 666166052 is about 873.3617463838.

The spelling of 666166052 in words is "six hundred sixty-six million, one hundred sixty-six thousand, fifty-two".