689278508059 has 2 divisors, whose sum is σ = 689278508060. Its totient is φ = 689278508058.

The previous prime is 689278507999. The next prime is 689278508069. The reversal of 689278508059 is 950805872986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689278508059 - 2²³ = 689270119451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 689278507985 and 689278508003.

It is not a weakly prime, because it can be changed into another prime (689278508069) by changing a digit.

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 as a sum of consecutive naturals, namely, 344639254029 + 344639254030.

It is an arithmetic number, because the mean of its divisors is an integer number (344639254030).

Almost surely, 2^689278508059 is an apocalyptic number.

689278508059 is a deficient number, since it is larger than the sum of its proper divisors (1).

689278508059 is an equidigital number, since it uses as much as digits as its factorization.

689278508059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87091200, while the sum is 67.

The spelling of 689278508059 in words is "six hundred eighty-nine billion, two hundred seventy-eight million, five hundred eight thousand, fifty-nine".