688333648 has 40 divisors (see below), whose sum is σ = 1359689760. Its totient is φ = 337476480.

The previous prime is 688333601. The next prime is 688333649. The reversal of 688333648 is 846333886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688333649) 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 7 ways as a sum of consecutive naturals, for example, 538386 + ... + 539662.

It is an arithmetic number, because the mean of its divisors is an integer number (33992244).

Almost surely, 2^688333648 is an apocalyptic number.

It is an amenable number.

688333648 is a deficient number, since it is larger than the sum of its proper divisors (671356112).

688333648 is a wasteful number, since it uses less digits than its factorization.

688333648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915 (or 1909 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The square root of 688333648 is about 26236.1134316804. The cubic root of 688333648 is about 882.9436752330.

The spelling of 688333648 in words is "six hundred eighty-eight million, three hundred thirty-three thousand, six hundred forty-eight".