688441316 has 12 divisors (see below), whose sum is σ = 1275641388. Its totient is φ = 323972352.

The previous prime is 688441279. The next prime is 688441321. The reversal of 688441316 is 613144886.

It can be written as a sum of positive squares in 2 ways, for example, as 589518400 + 98922916 = 24280^2 + 9946^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5062001 + ... + 5062136.

It is an arithmetic number, because the mean of its divisors is an integer number (106303449).

Almost surely, 2^688441316 is an apocalyptic number.

It is an amenable number.

688441316 is a deficient number, since it is larger than the sum of its proper divisors (587200072).

688441316 is a wasteful number, since it uses less digits than its factorization.

688441316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10124158 (or 10124156 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 688441316 is about 26238.1652559778. The cubic root of 688441316 is about 882.9897090248.

The spelling of 688441316 in words is "six hundred eighty-eight million, four hundred forty-one thousand, three hundred sixteen".