12446645 has 8 divisors (see below), whose sum is σ = 14962104. Its totient is φ = 9939904.

The previous prime is 12446633. The next prime is 12446671. The reversal of 12446645 is 54664421.

It can be written as a sum of positive squares in 4 ways, for example, as 6848689 + 5597956 = 2617^2 + 2366^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12446645 is a prime.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (1870263).

Almost surely, 2^12446645 is an apocalyptic number.

It is an amenable number.

12446645 is a deficient number, since it is larger than the sum of its proper divisors (2515459).

12446645 is an equidigital number, since it uses as much as digits as its factorization.

12446645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359.

The product of its digits is 23040, while the sum is 32.

The square root of 12446645 is about 3527.9803003985. The cubic root of 12446645 is about 231.7487681215.

The spelling of 12446645 in words is "twelve million, four hundred forty-six thousand, six hundred forty-five".