679902994187 has 2 divisors, whose sum is σ = 679902994188. Its totient is φ = 679902994186.

The previous prime is 679902994079. The next prime is 679902994229. The reversal of 679902994187 is 781499209976.

679902994187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 679902994187 - 2²² = 679898799883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 679902994187.

It is not a weakly prime, because it can be changed into another prime (679932994187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339951497093 + 339951497094.

It is an arithmetic number, because the mean of its divisors is an integer number (339951497094).

Almost surely, 2^679902994187 is an apocalyptic number.

679902994187 is a deficient number, since it is larger than the sum of its proper divisors (1).

679902994187 is an equidigital number, since it uses as much as digits as its factorization.

679902994187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123451776, while the sum is 71.

The spelling of 679902994187 in words is "six hundred seventy-nine billion, nine hundred two million, nine hundred ninety-four thousand, one hundred eighty-seven".