688082839 has 8 divisors (see below), whose sum is σ = 700290000. Its totient is φ = 675893952.

The previous prime is 688082827. The next prime is 688082887. The reversal of 688082839 is 938280886.

It is a happy number.

688082839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 688082839 - 2⁷ = 688082711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688082819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87627 + ... + 95155.

It is an arithmetic number, because the mean of its divisors is an integer number (87536250).

Almost surely, 2^688082839 is an apocalyptic number.

688082839 is a deficient number, since it is larger than the sum of its proper divisors (12207161).

688082839 is a wasteful number, since it uses less digits than its factorization.

688082839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137.

The product of its (nonzero) digits is 1327104, while the sum is 52.

The square root of 688082839 is about 26231.3331533111. Note that the first 3 decimals coincide. The cubic root of 688082839 is about 882.8364224383.

The spelling of 688082839 in words is "six hundred eighty-eight million, eighty-two thousand, eight hundred thirty-nine".