12065645 has 8 divisors (see below), whose sum is σ = 14507640. Its totient is φ = 9633280.

The previous prime is 12065633. The next prime is 12065681. The reversal of 12065645 is 54656021.

It can be written as a sum of positive squares in 4 ways, for example, as 2468041 + 9597604 = 1571^2 + 3098^2 .

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

It is not a de Polignac number, because 12065645 - 2⁴ = 12065629 is a prime.

It is a super-3 number, since 3×12065645³ (a number of 22 digits) contains 333 as substring.

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, 725 + ... + 4965.

It is an arithmetic number, because the mean of its divisors is an integer number (1813455).

Almost surely, 2^12065645 is an apocalyptic number.

It is an amenable number.

12065645 is a deficient number, since it is larger than the sum of its proper divisors (2441995).

12065645 is an equidigital number, since it uses as much as digits as its factorization.

12065645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 12065645 is about 3473.5637319617. The cubic root of 12065645 is about 229.3595604939.

The spelling of 12065645 in words is "twelve million, sixty-five thousand, six hundred forty-five".