12006535 has 4 divisors (see below), whose sum is σ = 14407848. Its totient is φ = 9605224.

The previous prime is 12006523. The next prime is 12006541. The reversal of 12006535 is 53560021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53560021 = 757 ⋅70753.

It is a cyclic number.

It is not a de Polignac number, because 12006535 - 2¹⁷ = 11875463 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1200649 + ... + 1200658.

It is an arithmetic number, because the mean of its divisors is an integer number (3601962).

Almost surely, 2^12006535 is an apocalyptic number.

12006535 is a deficient number, since it is larger than the sum of its proper divisors (2401313).

12006535 is an equidigital number, since it uses as much as digits as its factorization.

12006535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401312.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 12006535 is about 3465.0447327560. The cubic root of 12006535 is about 228.9844004553.

Adding to 12006535 its reverse (53560021), we get a palindrome (65566556).

The spelling of 12006535 in words is "twelve million, six thousand, five hundred thirty-five".