12063509 has 4 divisors (see below), whose sum is σ = 12081420. Its totient is φ = 12045600.

The previous prime is 12063497. The next prime is 12063529. The reversal of 12063509 is 90536021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8151025 + 3912484 = 2855^2 + 1978^2 .

It is a cyclic number.

It is not a de Polignac number, because 12063509 - 2⁸ = 12063253 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 (12063529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7904 + ... + 9305.

It is an arithmetic number, because the mean of its divisors is an integer number (3020355).

Almost surely, 2^12063509 is an apocalyptic number.

It is an amenable number.

12063509 is a deficient number, since it is larger than the sum of its proper divisors (17911).

12063509 is an equidigital number, since it uses as much as digits as its factorization.

12063509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17910.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 12063509 is about 3473.2562531434. The cubic root of 12063509 is about 229.3460250679.

The spelling of 12063509 in words is "twelve million, sixty-three thousand, five hundred nine".