12679651 has 4 divisors (see below), whose sum is σ = 13088704. Its totient is φ = 12270600.

The previous prime is 12679633. The next prime is 12679663. The reversal of 12679651 is 15697621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15697621 = 113 ⋅138917.

It is a cyclic number.

It is not a de Polignac number, because 12679651 - 2⁷ = 12679523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12679651.

It is not an unprimeable number, because it can be changed into a prime (12679691) 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 3 ways as a sum of consecutive naturals, for example, 204480 + ... + 204541.

It is an arithmetic number, because the mean of its divisors is an integer number (3272176).

Almost surely, 2^12679651 is an apocalyptic number.

12679651 is a deficient number, since it is larger than the sum of its proper divisors (409053).

12679651 is an equidigital number, since it uses as much as digits as its factorization.

12679651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409052.

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

The square root of 12679651 is about 3560.8497581336. The cubic root of 12679651 is about 233.1859788445.

The spelling of 12679651 in words is "twelve million, six hundred seventy-nine thousand, six hundred fifty-one".