12340657 has 8 divisors (see below), whose sum is σ = 14933376. Its totient is φ = 9955392.

The previous prime is 12340639. The next prime is 12340661. The reversal of 12340657 is 75604321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12340657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12340607) 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, 51733 + ... + 51970.

It is an arithmetic number, because the mean of its divisors is an integer number (1866672).

Almost surely, 2^12340657 is an apocalyptic number.

12340657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12340657 is a deficient number, since it is larger than the sum of its proper divisors (2592719).

12340657 is a wasteful number, since it uses less digits than its factorization.

12340657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103727.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 12340657 is about 3512.9271270552. The cubic root of 12340657 is about 231.0890819133.

Adding to 12340657 its reverse (75604321), we get a palindrome (87944978).

The spelling of 12340657 in words is "twelve million, three hundred forty thousand, six hundred fifty-seven".