12166755 has 16 divisors (see below), whose sum is σ = 19787424. Its totient is φ = 6382080.

The previous prime is 12166729. The next prime is 12166757. The reversal of 12166755 is 55766121.

It is not a de Polignac number, because 12166755 - 2⁹ = 12166243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12166757) 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 15 ways as a sum of consecutive naturals, for example, 5734 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (1236714).

Almost surely, 2^12166755 is an apocalyptic number.

12166755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12166755 is a deficient number, since it is larger than the sum of its proper divisors (7620669).

12166755 is a wasteful number, since it uses less digits than its factorization.

12166755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13366.

The product of its digits is 12600, while the sum is 33.

The square root of 12166755 is about 3488.0875849095. The cubic root of 12166755 is about 229.9984561963.

It can be divided in two parts, 12166 and 755, that added together give a palindrome (12921).

The spelling of 12166755 in words is "twelve million, one hundred sixty-six thousand, seven hundred fifty-five".