12045689 has 2 divisors, whose sum is σ = 12045690. Its totient is φ = 12045688.

The previous prime is 12045661. The next prime is 12045697. The reversal of 12045689 is 98654021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12020089 + 25600 = 3467^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 12045689 - 2¹⁶ = 11980153 is a prime.

It is not a weakly prime, because it can be changed into another prime (12045619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6022844 + 6022845.

It is an arithmetic number, because the mean of its divisors is an integer number (6022845).

Almost surely, 2^12045689 is an apocalyptic number.

It is an amenable number.

12045689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12045689 is an equidigital number, since it uses as much as digits as its factorization.

12045689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 12045689 is about 3470.6899890368. The cubic root of 12045689 is about 229.2330407997.

The spelling of 12045689 in words is "twelve million, forty-five thousand, six hundred eighty-nine".