679716487 has 2 divisors, whose sum is σ = 679716488. Its totient is φ = 679716486.

The previous prime is 679716451. The next prime is 679716497. The reversal of 679716487 is 784617976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 679716487 - 2¹¹ = 679714439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679716497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339858243 + 339858244.

It is an arithmetic number, because the mean of its divisors is an integer number (339858244).

Almost surely, 2^679716487 is an apocalyptic number.

679716487 is a deficient number, since it is larger than the sum of its proper divisors (1).

679716487 is an equidigital number, since it uses as much as digits as its factorization.

679716487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 55.

The square root of 679716487 is about 26071.3729404495. The cubic root of 679716487 is about 879.2437058381.

The spelling of 679716487 in words is "six hundred seventy-nine million, seven hundred sixteen thousand, four hundred eighty-seven".