679549216253 has 8 divisors (see below), whose sum is σ = 722083283640. Its totient is φ = 637299658240.

The previous prime is 679549216243. The next prime is 679549216259. The reversal of 679549216253 is 352612945976.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 213936776089 + 465612440164 = 462533^2 + 682358^2 .

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 679549216253 - 2¹⁰ = 679549215229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 679549216192 and 679549216201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679549216259) 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, 71122418 + ... + 71131971.

It is an arithmetic number, because the mean of its divisors is an integer number (90260410455).

Almost surely, 2^679549216253 is an apocalyptic number.

It is an amenable number.

679549216253 is a deficient number, since it is larger than the sum of its proper divisors (42534067387).

679549216253 is a wasteful number, since it uses less digits than its factorization.

679549216253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142254687.

The product of its digits is 24494400, while the sum is 59.

The spelling of 679549216253 in words is "six hundred seventy-nine billion, five hundred forty-nine million, two hundred sixteen thousand, two hundred fifty-three".