12680539 has 4 divisors (see below), whose sum is σ = 12751560. Its totient is φ = 12609520.

The previous prime is 12680537. The next prime is 12680557. The reversal of 12680539 is 93508621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12680539 - 2¹ = 12680537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12680533) 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, 35242 + ... + 35599.

It is an arithmetic number, because the mean of its divisors is an integer number (3187890).

Almost surely, 2^12680539 is an apocalyptic number.

12680539 is a deficient number, since it is larger than the sum of its proper divisors (71021).

12680539 is an equidigital number, since it uses as much as digits as its factorization.

12680539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71020.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 12680539 is about 3560.9744452888. The cubic root of 12680539 is about 233.1914223254.

The spelling of 12680539 in words is "twelve million, six hundred eighty thousand, five hundred thirty-nine".