12445645 has 8 divisors (see below), whose sum is σ = 15584256. Its totient is φ = 9523536.

The previous prime is 12445639. The next prime is 12445651. The reversal of 12445645 is 54654421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12445639) and next prime (12445651).

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 12445645 - 2⁵ = 12445613 is a prime.

It is a super-3 number, since 3×12445645³ (a number of 22 digits) contains 333 as substring.

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, 53997 + ... + 54226.

It is an arithmetic number, because the mean of its divisors is an integer number (1948032).

Almost surely, 2^12445645 is an apocalyptic number.

It is an amenable number.

12445645 is a deficient number, since it is larger than the sum of its proper divisors (3138611).

12445645 is a wasteful number, since it uses less digits than its factorization.

12445645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108251.

The product of its digits is 19200, while the sum is 31.

The square root of 12445645 is about 3527.8385734044. The cubic root of 12445645 is about 231.7425614964.

It can be divided in two parts, 1244 and 5645, that added together give a square (6889 = 83²).

The spelling of 12445645 in words is "twelve million, four hundred forty-five thousand, six hundred forty-five".