687307063 has 2 divisors, whose sum is σ = 687307064. Its totient is φ = 687307062.

The previous prime is 687307057. The next prime is 687307073. The reversal of 687307063 is 360703786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687307063 - 2²¹ = 685209911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687307003) 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, 343653531 + 343653532.

It is an arithmetic number, because the mean of its divisors is an integer number (343653532).

Almost surely, 2^687307063 is an apocalyptic number.

687307063 is a deficient number, since it is larger than the sum of its proper divisors (1).

687307063 is an equidigital number, since it uses as much as digits as its factorization.

687307063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 687307063 is about 26216.5417818598. The cubic root of 687307063 is about 882.5045143111.

The spelling of 687307063 in words is "six hundred eighty-seven million, three hundred seven thousand, sixty-three".