687039298418663 has 2 divisors, whose sum is σ = 687039298418664. Its totient is φ = 687039298418662.

The previous prime is 687039298418611. The next prime is 687039298418689. The reversal of 687039298418663 is 366814892930786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687039298418663 - 2¹⁴ = 687039298402279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687039298418563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343519649209331 + 343519649209332.

It is an arithmetic number, because the mean of its divisors is an integer number (343519649209332).

Almost surely, 2^{687039298418663} is an apocalyptic number.

687039298418663 is a deficient number, since it is larger than the sum of its proper divisors (1).

687039298418663 is an equidigital number, since it uses as much as digits as its factorization.

687039298418663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4514807808, while the sum is 80.

The spelling of 687039298418663 in words is "six hundred eighty-seven trillion, thirty-nine billion, two hundred ninety-eight million, four hundred eighteen thousand, six hundred sixty-three".