688718850960 has 160 divisors (see below), whose sum is σ = 2445830813952. Its totient is φ = 157047367680.

The previous prime is 688718850949. The next prime is 688718851003. The reversal of 688718850960 is 69058817886.

It is a junction number, because it is equal to n+sod(n) for n = 688718850891 and 688718850900.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 220402 + ... + 1194158.

Almost surely, 2^688718850960 is an apocalyptic number.

688718850960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 688718850960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222915406976).

688718850960 is an abundant number, since it is smaller than the sum of its proper divisors (1757111962992).

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

688718850960 is a wasteful number, since it uses less digits than its factorization.

688718850960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974201 (or 974195 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 66.

The spelling of 688718850960 in words is "six hundred eighty-eight billion, seven hundred eighteen million, eight hundred fifty thousand, nine hundred sixty".