679838317487 has 16 divisors (see below), whose sum is σ = 809885260800. Its totient is φ = 558329946720.

The previous prime is 679838317481. The next prime is 679838317493. The reversal of 679838317487 is 784713838976.

It is an interprime number because it is at equal distance from previous prime (679838317481) and next prime (679838317493).

It is not a de Polignac number, because 679838317487 - 2¹⁸ = 679838055343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 679838317487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679838317481) by changing a digit.

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, 12755687 + ... + 12808872.

It is an arithmetic number, because the mean of its divisors is an integer number (50617828800).

Almost surely, 2^679838317487 is an apocalyptic number.

679838317487 is a deficient number, since it is larger than the sum of its proper divisors (130046943313).

679838317487 is a wasteful number, since it uses less digits than its factorization.

679838317487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25564726.

The product of its digits is 341397504, while the sum is 71.

The spelling of 679838317487 in words is "six hundred seventy-nine billion, eight hundred thirty-eight million, three hundred seventeen thousand, four hundred eighty-seven".