12652609 has 4 divisors (see below), whose sum is σ = 12867120. Its totient is φ = 12438100.

The previous prime is 12652597. The next prime is 12652649. The reversal of 12652609 is 90625621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90625621 = 41 ⋅2210381.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12652609 is a prime.

It is a Smith number, since the sum of its digits (31) 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 not an unprimeable number, because it can be changed into a prime (12652649) 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, 107167 + ... + 107284.

It is an arithmetic number, because the mean of its divisors is an integer number (3216780).

Almost surely, 2^12652609 is an apocalyptic number.

It is an amenable number.

12652609 is a deficient number, since it is larger than the sum of its proper divisors (214511).

12652609 is an equidigital number, since it uses as much as digits as its factorization.

12652609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214510.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 12652609 is about 3557.0506040820. The cubic root of 12652609 is about 233.0200882801.

The spelling of 12652609 in words is "twelve million, six hundred fifty-two thousand, six hundred nine".