12065887 has 4 divisors (see below), whose sum is σ = 12322656. Its totient is φ = 11809120.

The previous prime is 12065881. The next prime is 12065897. The reversal of 12065887 is 78856021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12065887 - 2⁷ = 12065759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12065881) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 128314 + ... + 128407.

It is an arithmetic number, because the mean of its divisors is an integer number (3080664).

Almost surely, 2^12065887 is an apocalyptic number.

12065887 is a deficient number, since it is larger than the sum of its proper divisors (256769).

12065887 is an equidigital number, since it uses as much as digits as its factorization.

12065887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256768.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12065887 is about 3473.5985663286. The cubic root of 12065887 is about 229.3610939011.

The spelling of 12065887 in words is "twelve million, sixty-five thousand, eight hundred eighty-seven".