666165532 has 12 divisors (see below), whose sum is σ = 1166079096. Its totient is φ = 333000080.

The previous prime is 666165527. The next prime is 666165557. The reversal of 666165532 is 235561666.

It is a happy number.

666165532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 319 + ... + 36502.

It is an arithmetic number, because the mean of its divisors is an integer number (97173258).

Almost surely, 2^666165532 is an apocalyptic number.

It is an amenable number.

666165532 is a deficient number, since it is larger than the sum of its proper divisors (499913564).

666165532 is a wasteful number, since it uses less digits than its factorization.

666165532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41348 (or 41346 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The square root of 666165532 is about 25810.1827192292. The cubic root of 666165532 is about 873.3615191390.

The spelling of 666165532 in words is "six hundred sixty-six million, one hundred sixty-five thousand, five hundred thirty-two".