12456679 has 4 divisors (see below), whose sum is σ = 12793384. Its totient is φ = 12119976.

The previous prime is 12456677. The next prime is 12456683. The reversal of 12456679 is 97665421.

12456679 = T₈₀₂ + T₈₀₃ + ... + T₈₃₈.

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 12456679 - 2¹ = 12456677 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456671) 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, 168297 + ... + 168370.

It is an arithmetic number, because the mean of its divisors is an integer number (3198346).

Almost surely, 2^12456679 is an apocalyptic number.

12456679 is a deficient number, since it is larger than the sum of its proper divisors (336705).

12456679 is an equidigital number, since it uses as much as digits as its factorization.

12456679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336704.

The product of its digits is 90720, while the sum is 40.

The square root of 12456679 is about 3529.4020740063. The cubic root of 12456679 is about 231.8110270018.

The spelling of 12456679 in words is "twelve million, four hundred fifty-six thousand, six hundred seventy-nine".