12066191 has 8 divisors (see below), whose sum is σ = 12708960. Its totient is φ = 11433312.

The previous prime is 12066179. The next prime is 12066193. The reversal of 12066191 is 19166021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12066191 - 2⁶ = 12066127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12066191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12066193) 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 7 ways as a sum of consecutive naturals, for example, 101 + ... + 4913.

It is an arithmetic number, because the mean of its divisors is an integer number (1588620).

Almost surely, 2^12066191 is an apocalyptic number.

12066191 is a deficient number, since it is larger than the sum of its proper divisors (642769).

12066191 is a wasteful number, since it uses less digits than its factorization.

12066191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 12066191 is about 3473.6423247076. The cubic root of 12066191 is about 229.3630201357.

The spelling of 12066191 in words is "twelve million, sixty-six thousand, one hundred ninety-one".