688426541682 has 128 divisors (see below), whose sum is σ = 1623848878080. Its totient is φ = 192321864000.

The previous prime is 688426541617. The next prime is 688426541711. The reversal of 688426541682 is 286145624886.

It is a super-2 number, since 2×688426541682² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 14589307 + ... + 14636417.

It is an arithmetic number, because the mean of its divisors is an integer number (12686319360).

Almost surely, 2^688426541682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 688426541682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811924439040).

688426541682 is an abundant number, since it is smaller than the sum of its proper divisors (935422336398).

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

688426541682 is a wasteful number, since it uses less digits than its factorization.

688426541682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47460.

The product of its digits is 35389440, while the sum is 60.

The spelling of 688426541682 in words is "six hundred eighty-eight billion, four hundred twenty-six million, five hundred forty-one thousand, six hundred eighty-two".