679870505245 has 32 divisors (see below), whose sum is σ = 839064635136. Its totient is φ = 528524505600.

The previous prime is 679870505233. The next prime is 679870505261. The reversal of 679870505245 is 542505078976.

It is not a de Polignac number, because 679870505245 - 2³¹ = 677723021597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 679870505245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106276387 + ... + 106282783.

It is an arithmetic number, because the mean of its divisors is an integer number (26220769848).

Almost surely, 2^679870505245 is an apocalyptic number.

It is an amenable number.

679870505245 is a deficient number, since it is larger than the sum of its proper divisors (159194129891).

679870505245 is a wasteful number, since it uses less digits than its factorization.

679870505245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421.

The product of its (nonzero) digits is 21168000, while the sum is 58.

The spelling of 679870505245 in words is "six hundred seventy-nine billion, eight hundred seventy million, five hundred five thousand, two hundred forty-five".