12066165 has 24 divisors (see below), whose sum is σ = 21691488. Its totient is φ = 6434640.

The previous prime is 12066163. The next prime is 12066179. The reversal of 12066165 is 56166021.

It is a happy number.

It is not a de Polignac number, because 12066165 - 2¹ = 12066163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12066163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3751 + ... + 6180.

It is an arithmetic number, because the mean of its divisors is an integer number (903812).

Almost surely, 2^12066165 is an apocalyptic number.

12066165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12066165 is a deficient number, since it is larger than the sum of its proper divisors (9625323).

12066165 is an frugal number, since it uses more digits than its factorization.

12066165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9951 (or 9939 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12066165 is about 3473.6385822362. The cubic root of 12066165 is about 229.3628553932.

The spelling of 12066165 in words is "twelve million, sixty-six thousand, one hundred sixty-five".