688107663 has 8 divisors (see below), whose sum is σ = 1019418800. Its totient is φ = 458738424.

The previous prime is 688107661. The next prime is 688107727. The reversal of 688107663 is 366701886.

It is not a de Polignac number, because 688107663 - 2¹ = 688107661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688107661) 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 in 7 ways as a sum of consecutive naturals, for example, 12742708 + ... + 12742761.

It is an arithmetic number, because the mean of its divisors is an integer number (127427350).

Almost surely, 2^688107663 is an apocalyptic number.

688107663 is a deficient number, since it is larger than the sum of its proper divisors (331311137).

688107663 is a wasteful number, since it uses less digits than its factorization.

688107663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25485478 (or 25485472 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 688107663 is about 26231.8063236217. The cubic root of 688107663 is about 882.8470390223.

The spelling of 688107663 in words is "six hundred eighty-eight million, one hundred seven thousand, six hundred sixty-three".