679817678243 has 8 divisors (see below), whose sum is σ = 741731612160. Its totient is φ = 617922465480.

The previous prime is 679817678233. The next prime is 679817678263. The reversal of 679817678243 is 342876718976.

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

It is a cyclic number.

It is not a de Polignac number, because 679817678243 - 2¹⁸ = 679817416099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (679817678203) 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, 4604303 + ... + 4749656.

It is an arithmetic number, because the mean of its divisors is an integer number (92716451520).

Almost surely, 2^679817678243 is an apocalyptic number.

679817678243 is a deficient number, since it is larger than the sum of its proper divisors (61913933917).

679817678243 is a wasteful number, since it uses less digits than its factorization.

679817678243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9360577.

The product of its digits is 170698752, while the sum is 68.

The spelling of 679817678243 in words is "six hundred seventy-nine billion, eight hundred seventeen million, six hundred seventy-eight thousand, two hundred forty-three".