12065505 has 8 divisors (see below), whose sum is σ = 19304832. Its totient is φ = 6434928.

The previous prime is 12065491. The next prime is 12065507. The reversal of 12065505 is 50556021.

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

It is not a de Polignac number, because 12065505 - 2⁴ = 12065489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12065507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402169 + ... + 402198.

It is an arithmetic number, because the mean of its divisors is an integer number (2413104).

Almost surely, 2^12065505 is an apocalyptic number.

12065505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12065505 is a deficient number, since it is larger than the sum of its proper divisors (7239327).

12065505 is an equidigital number, since it uses as much as digits as its factorization.

12065505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804375.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 12065505 is about 3473.5435796892. The cubic root of 12065505 is about 229.3586733894.

The spelling of 12065505 in words is "twelve million, sixty-five thousand, five hundred five".