12257689 has 8 divisors (see below), whose sum is σ = 12946752. Its totient is φ = 11581680.

The previous prime is 12257677. The next prime is 12257711. The reversal of 12257689 is 98675221.

12257689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12257689 - 2²¹ = 10160537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12257389) 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, 1302 + ... + 5119.

It is an arithmetic number, because the mean of its divisors is an integer number (1618344).

Almost surely, 2^12257689 is an apocalyptic number.

It is an amenable number.

12257689 is a deficient number, since it is larger than the sum of its proper divisors (689063).

12257689 is an equidigital number, since it uses as much as digits as its factorization.

12257689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6527.

The product of its digits is 60480, while the sum is 40.

The square root of 12257689 is about 3501.0982562619. The cubic root of 12257689 is about 230.5700353244.

The spelling of 12257689 in words is "twelve million, two hundred fifty-seven thousand, six hundred eighty-nine".