688552799 has 12 divisors (see below), whose sum is σ = 796675320. Its totient is φ = 593010000.

The previous prime is 688552793. The next prime is 688552831. The reversal of 688552799 is 997255886.

It is a de Polignac number, because none of the positive numbers 2^k-688552799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688552793) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 147452 + ... + 152049.

It is an arithmetic number, because the mean of its divisors is an integer number (66389610).

Almost surely, 2^688552799 is an apocalyptic number.

688552799 is a deficient number, since it is larger than the sum of its proper divisors (108122521).

688552799 is a wasteful number, since it uses less digits than its factorization.

688552799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299542 (or 299531 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 59.

The square root of 688552799 is about 26240.2896134932. The cubic root of 688552799 is about 883.0373688743.

The spelling of 688552799 in words is "six hundred eighty-eight million, five hundred fifty-two thousand, seven hundred ninety-nine".