12486657 has 4 divisors (see below), whose sum is σ = 16648880. Its totient is φ = 8324436.

The previous prime is 12486623. The next prime is 12486659. The reversal of 12486657 is 75668421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75668421 = 3 ⋅25222807.

It is not a de Polignac number, because 12486657 - 2¹¹ = 12484609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12486659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081107 + ... + 2081112.

It is an arithmetic number, because the mean of its divisors is an integer number (4162220).

Almost surely, 2^12486657 is an apocalyptic number.

It is an amenable number.

12486657 is a deficient number, since it is larger than the sum of its proper divisors (4162223).

12486657 is an equidigital number, since it uses as much as digits as its factorization.

12486657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162222.

The product of its digits is 80640, while the sum is 39.

The square root of 12486657 is about 3533.6464169467. The cubic root of 12486657 is about 231.9968353215.

The spelling of 12486657 in words is "twelve million, four hundred eighty-six thousand, six hundred fifty-seven".