688865112 has 96 divisors (see below), whose sum is σ = 2063596080. Its totient is φ = 206219520.

The previous prime is 688865087. The next prime is 688865119. The reversal of 688865112 is 211568886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688865119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24687 + ... + 44577.

Almost surely, 2^688865112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 688865112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031798040).

688865112 is an abundant number, since it is smaller than the sum of its proper divisors (1374730968).

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

688865112 is a wasteful number, since it uses less digits than its factorization.

688865112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19953 (or 19946 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 688865112 is about 26246.2399592780. The cubic root of 688865112 is about 883.1708577242.

The spelling of 688865112 in words is "six hundred eighty-eight million, eight hundred sixty-five thousand, one hundred twelve".