12005765 has 8 divisors (see below), whose sum is σ = 14496288. Its totient is φ = 9545040.

The previous prime is 12005761. The next prime is 12005767. The reversal of 12005765 is 56750021.

12005765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12005765 - 2² = 12005761 is a prime.

It is a Duffinian number.

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, 6551 + ... + 8180.

It is an arithmetic number, because the mean of its divisors is an integer number (1812036).

Almost surely, 2^12005765 is an apocalyptic number.

It is an amenable number.

12005765 is a deficient number, since it is larger than the sum of its proper divisors (2490523).

12005765 is a wasteful number, since it uses less digits than its factorization.

12005765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14899.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 12005765 is about 3464.9336212978. The cubic root of 12005765 is about 228.9795052945.

Adding to 12005765 its reverse (56750021), we get a palindrome (68755786).

The spelling of 12005765 in words is "twelve million, five thousand, seven hundred sixty-five".