12516679 has 4 divisors (see below), whose sum is σ = 14304784. Its totient is φ = 10728576.

The previous prime is 12516659. The next prime is 12516683. The reversal of 12516679 is 97661521.

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 12516679 - 2¹³ = 12508487 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 (12516659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894042 + ... + 894055.

It is an arithmetic number, because the mean of its divisors is an integer number (3576196).

Almost surely, 2^12516679 is an apocalyptic number.

12516679 is a deficient number, since it is larger than the sum of its proper divisors (1788105).

12516679 is an equidigital number, since it uses as much as digits as its factorization.

12516679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788104.

The product of its digits is 22680, while the sum is 37.

The square root of 12516679 is about 3537.8918864205. The cubic root of 12516679 is about 232.1826185508.

The spelling of 12516679 in words is "twelve million, five hundred sixteen thousand, six hundred seventy-nine".