12065985 has 12 divisors (see below), whose sum is σ = 20914452. Its totient is φ = 6435168.

The previous prime is 12065947. The next prime is 12065987. The reversal of 12065985 is 58956021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6922161 + 5143824 = 2631^2 + 2268^2 .

It is not a de Polignac number, because 12065985 - 2⁷ = 12065857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12065987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134022 + ... + 134111.

It is an arithmetic number, because the mean of its divisors is an integer number (1742871).

Almost surely, 2^12065985 is an apocalyptic number.

12065985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12065985 is a deficient number, since it is larger than the sum of its proper divisors (8848467).

12065985 is a wasteful number, since it uses less digits than its factorization.

12065985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268144 (or 268141 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 12065985 is about 3473.6126727083. The cubic root of 12065985 is about 229.3617148619.

Adding to 12065985 its sum of digits (36), we get a palindrome (12066021).

The spelling of 12065985 in words is "twelve million, sixty-five thousand, nine hundred eighty-five".