12257717 has 8 divisors (see below), whose sum is σ = 13096800. Its totient is φ = 11438064.

The previous prime is 12257711. The next prime is 12257737. The reversal of 12257717 is 71775221.

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 12257717 - 2¹² = 12253621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12257711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3542 + ... + 6087.

It is an arithmetic number, because the mean of its divisors is an integer number (1637100).

Almost surely, 2^12257717 is an apocalyptic number.

It is an amenable number.

12257717 is a deficient number, since it is larger than the sum of its proper divisors (839083).

12257717 is an equidigital number, since it uses as much as digits as its factorization.

12257717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715.

The product of its digits is 6860, while the sum is 32.

The square root of 12257717 is about 3501.1022550048. The cubic root of 12257717 is about 230.5702108865.

The spelling of 12257717 in words is "twelve million, two hundred fifty-seven thousand, seven hundred seventeen".