679341463505 has 4 divisors (see below), whose sum is σ = 815209756212. Its totient is φ = 543473170800.

The previous prime is 679341463453. The next prime is 679341463531. The reversal of 679341463505 is 505364143976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 304175413441 + 375166050064 = 551521^2 + 612508^2 .

It is not a de Polignac number, because 679341463505 - 2⁸ = 679341463249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67934146346 + ... + 67934146355.

It is an arithmetic number, because the mean of its divisors is an integer number (203802439053).

Almost surely, 2^679341463505 is an apocalyptic number.

It is an amenable number.

679341463505 is a deficient number, since it is larger than the sum of its proper divisors (135868292707).

679341463505 is a wasteful number, since it uses less digits than its factorization.

679341463505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135868292706.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 679341463505 in words is "six hundred seventy-nine billion, three hundred forty-one million, four hundred sixty-three thousand, five hundred five".