12081765 has 8 divisors (see below), whose sum is σ = 19330848. Its totient is φ = 6443600.

The previous prime is 12081763. The next prime is 12081791. The reversal of 12081765 is 56718021.

12081765 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 12081765 - 2¹ = 12081763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12081761) 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, 402711 + ... + 402740.

It is an arithmetic number, because the mean of its divisors is an integer number (2416356).

Almost surely, 2^12081765 is an apocalyptic number.

12081765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12081765 is a deficient number, since it is larger than the sum of its proper divisors (7249083).

12081765 is an equidigital number, since it uses as much as digits as its factorization.

12081765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805459.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 12081765 is about 3475.8833409653. The cubic root of 12081765 is about 229.4616583866.

Adding to 12081765 its reverse (56718021), we get a palindrome (68799786).

The spelling of 12081765 in words is "twelve million, eighty-one thousand, seven hundred sixty-five".