688802060 has 48 divisors (see below), whose sum is σ = 1541030400. Its totient is φ = 257863104.

The previous prime is 688802047. The next prime is 688802069. The reversal of 688802060 is 60208886.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (688802069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20621 + ... + 42459.

It is an arithmetic number, because the mean of its divisors is an integer number (32104800).

Almost surely, 2^688802060 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 688802060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770515200).

688802060 is an abundant number, since it is smaller than the sum of its proper divisors (852228340).

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

688802060 is a wasteful number, since it uses less digits than its factorization.

688802060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21950 (or 21948 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 688802060 is about 26245.0387692608. The cubic root of 688802060 is about 883.1439112839.

The spelling of 688802060 in words is "six hundred eighty-eight million, eight hundred two thousand, sixty".