688098996 has 96 divisors (see below), whose sum is σ = 1929674880. Its totient is φ = 210788352.

The previous prime is 688098991. The next prime is 688099001. The reversal of 688098996 is 699890886.

It is an interprime number because it is at equal distance from previous prime (688098991) and next prime (688099001).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688098991) 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 31 ways as a sum of consecutive naturals, for example, 359875 + ... + 361781.

It is an arithmetic number, because the mean of its divisors is an integer number (20100780).

Almost surely, 2^688098996 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 688098996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964837440).

688098996 is an abundant number, since it is smaller than the sum of its proper divisors (1241575884).

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

688098996 is a wasteful number, since it uses less digits than its factorization.

688098996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190 (or 2182 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The square root of 688098996 is about 26231.6411228882. The cubic root of 688098996 is about 882.8433323991.

The spelling of 688098996 in words is "six hundred eighty-eight million, ninety-eight thousand, nine hundred ninety-six".