12305649 has 8 divisors (see below), whose sum is σ = 16638912. Its totient is φ = 8088080.

The previous prime is 12305641. The next prime is 12305653. The reversal of 12305649 is 94650321.

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 12305649 - 2³ = 12305641 is a prime.

It is a super-2 number, since 2×12305649² = 302857994622402, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12305641) 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, 28674 + ... + 29099.

It is an arithmetic number, because the mean of its divisors is an integer number (2079864).

Almost surely, 2^12305649 is an apocalyptic number.

It is an amenable number.

12305649 is a deficient number, since it is larger than the sum of its proper divisors (4333263).

12305649 is an equidigital number, since it uses as much as digits as its factorization.

12305649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57847.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 12305649 is about 3507.9408489882. The cubic root of 12305649 is about 230.8703569693.

The spelling of 12305649 in words is "twelve million, three hundred five thousand, six hundred forty-nine".