12217679 has 8 divisors (see below), whose sum is σ = 12984048. Its totient is φ = 11456640.

The previous prime is 12217657. The next prime is 12217693. The reversal of 12217679 is 97671221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12217679 - 2¹² = 12213583 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 (12217619) 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, 4049 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (1623006).

Almost surely, 2^12217679 is an apocalyptic number.

12217679 is a deficient number, since it is larger than the sum of its proper divisors (766369).

12217679 is a wasteful number, since it uses less digits than its factorization.

12217679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665.

The product of its digits is 10584, while the sum is 35.

The square root of 12217679 is about 3495.3796646430. The cubic root of 12217679 is about 230.3188960192.

The spelling of 12217679 in words is "twelve million, two hundred seventeen thousand, six hundred seventy-nine".