12107765 has 4 divisors (see below), whose sum is σ = 14529324. Its totient is φ = 9686208.

The previous prime is 12107759. The next prime is 12107783. The reversal of 12107765 is 56770121.

12107765 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56770121 = 3929 ⋅14449.

It can be written as a sum of positive squares in 2 ways, for example, as 7789681 + 4318084 = 2791^2 + 2078^2 .

It is a cyclic number.

It is not a de Polignac number, because 12107765 - 2⁴ = 12107749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210772 + ... + 1210781.

It is an arithmetic number, because the mean of its divisors is an integer number (3632331).

Almost surely, 2^12107765 is an apocalyptic number.

It is an amenable number.

12107765 is a deficient number, since it is larger than the sum of its proper divisors (2421559).

12107765 is an equidigital number, since it uses as much as digits as its factorization.

12107765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421558.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 12107765 is about 3479.6213874501. The cubic root of 12107765 is about 229.6261412141.

Adding to 12107765 its reverse (56770121), we get a palindrome (68877886).

The spelling of 12107765 in words is "twelve million, one hundred seven thousand, seven hundred sixty-five".