12686545 has 8 divisors (see below), whose sum is σ = 15247296. Its totient is φ = 10133616.

The previous prime is 12686521. The next prime is 12686549. The reversal of 12686545 is 54568621.

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 12686545 - 2⁷ = 12686417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12686549) 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, 2574 + ... + 5656.

It is an arithmetic number, because the mean of its divisors is an integer number (1905912).

Almost surely, 2^12686545 is an apocalyptic number.

It is an amenable number.

12686545 is a deficient number, since it is larger than the sum of its proper divisors (2560751).

12686545 is an equidigital number, since it uses as much as digits as its factorization.

12686545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its digits is 57600, while the sum is 37.

The square root of 12686545 is about 3561.8176539514. The cubic root of 12686545 is about 233.2282327119.

It can be divided in two parts, 12686 and 545, that added together give a palindrome (13231).

The spelling of 12686545 in words is "twelve million, six hundred eighty-six thousand, five hundred forty-five".