12609649 has 8 divisors (see below), whose sum is σ = 13610240. Its totient is φ = 11613456.

The previous prime is 12609647. The next prime is 12609659. The reversal of 12609649 is 94690621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12609649 - 2¹ = 12609647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12609643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7264 + ... + 8830.

It is an arithmetic number, because the mean of its divisors is an integer number (1701280).

Almost surely, 2^12609649 is an apocalyptic number.

It is an amenable number.

12609649 is a deficient number, since it is larger than the sum of its proper divisors (1000591).

12609649 is a wasteful number, since it uses less digits than its factorization.

12609649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 12609649 is about 3551.0067586531. The cubic root of 12609649 is about 232.7560612016.

The spelling of 12609649 in words is "twelve million, six hundred nine thousand, six hundred forty-nine".