688219081608 has 64 divisors (see below), whose sum is σ = 1730445837120. Its totient is φ = 228087187200.

The previous prime is 688219081607. The next prime is 688219081609. The reversal of 688219081608 is 806180912886.

It is an interprime number because it is at equal distance from previous prime (688219081607) and next prime (688219081609).

It is not an unprimeable number, because it can be changed into a prime (688219081607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22343178 + ... + 22373958.

It is an arithmetic number, because the mean of its divisors is an integer number (27038216205).

Almost surely, 2^688219081608 is an apocalyptic number.

It is an amenable number.

688219081608 is an abundant number, since it is smaller than the sum of its proper divisors (1042226755512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688219081608 is a wasteful number, since it uses less digits than its factorization.

688219081608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36118 (or 36114 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 57.

The spelling of 688219081608 in words is "six hundred eighty-eight billion, two hundred nineteen million, eighty-one thousand, six hundred eight".