12005766 has 16 divisors (see below), whose sum is σ = 26679600. Its totient is φ = 4001904.

The previous prime is 12005761. The next prime is 12005767. The reversal of 12005766 is 66750021.

12005766 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 (12005761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111111 + ... + 111218.

It is an arithmetic number, because the mean of its divisors is an integer number (1667475).

Almost surely, 2^12005766 is an apocalyptic number.

12005766 is an abundant number, since it is smaller than the sum of its proper divisors (14673834).

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

12005766 is a wasteful number, since it uses less digits than its factorization.

12005766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222340 (or 222334 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 12005766 is about 3464.9337656007. The cubic root of 12005766 is about 228.9795116520.

Adding to 12005766 its reverse (66750021), we get a palindrome (78755787).

The spelling of 12005766 in words is "twelve million, five thousand, seven hundred sixty-six".