12161766 has 16 divisors (see below), whose sum is σ = 25754544. Its totient is φ = 3815424.

The previous prime is 12161719. The next prime is 12161771. The reversal of 12161766 is 66716121.

It is a congruent number.

It is an unprimeable number.

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, 59515 + ... + 59718.

It is an arithmetic number, because the mean of its divisors is an integer number (1609659).

Almost surely, 2^12161766 is an apocalyptic number.

12161766 is an abundant number, since it is smaller than the sum of its proper divisors (13592778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12161766 is a wasteful number, since it uses less digits than its factorization.

12161766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119255.

The product of its digits is 3024, while the sum is 30.

The square root of 12161766 is about 3487.3723632558. The cubic root of 12161766 is about 229.9670148034.

Adding to 12161766 its reverse (66716121), we get a palindrome (78877887).

The spelling of 12161766 in words is "twelve million, one hundred sixty-one thousand, seven hundred sixty-six".