12289645 has 8 divisors (see below), whose sum is σ = 14767200. Its totient is φ = 9818640.

The previous prime is 12289639. The next prime is 12289679. The reversal of 12289645 is 54698221.

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

It is not a de Polignac number, because 12289645 - 2⁹ = 12289133 is a prime.

It is a super-3 number, since 3×12289645³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4806 + ... + 6904.

It is an arithmetic number, because the mean of its divisors is an integer number (1845900).

Almost surely, 2^12289645 is an apocalyptic number.

It is an amenable number.

12289645 is a deficient number, since it is larger than the sum of its proper divisors (2477555).

12289645 is a wasteful number, since it uses less digits than its factorization.

12289645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275.

The product of its digits is 34560, while the sum is 37.

The square root of 12289645 is about 3505.6589965369. The cubic root of 12289645 is about 230.7702281011.

The spelling of 12289645 in words is "twelve million, two hundred eighty-nine thousand, six hundred forty-five".