679341905285 has 16 divisors (see below), whose sum is σ = 824653683696. Its totient is φ = 537213800448.

The previous prime is 679341905267. The next prime is 679341905327. The reversal of 679341905285 is 582509143976.

It is a happy number.

It is a Cunningham number, because it is equal to 824222²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 109258013764 + 570083891521 = 330542^2 + 755039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679341905285 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2090474 + ... + 2393483.

It is an arithmetic number, because the mean of its divisors is an integer number (51540855231).

It is a 1-persistent number, because it is pandigital, but 2⋅679341905285 = 1358683810570 is not.

Almost surely, 2^679341905285 is an apocalyptic number.

It is an amenable number.

679341905285 is a deficient number, since it is larger than the sum of its proper divisors (145311778411).

679341905285 is a wasteful number, since it uses less digits than its factorization.

679341905285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484312.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The spelling of 679341905285 in words is "six hundred seventy-nine billion, three hundred forty-one million, nine hundred five thousand, two hundred eighty-five".