688055 has 8 divisors (see below), whose sum is σ = 830544. Its totient is φ = 547200.

The previous prime is 688031. The next prime is 688063. The reversal of 688055 is 550886.

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

It is not a de Polignac number, because 688055 - 2¹⁰ = 687031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 688055.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (103818).

2⁶⁸⁸⁰⁵⁵ is an apocalyptic number.

688055 is a deficient number, since it is larger than the sum of its proper divisors (142489).

688055 is a wasteful number, since it uses less digits than its factorization.

688055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 688055 is about 829.4908076646. The cubic root of 688055 is about 88.2824516113.

The spelling of 688055 in words is "six hundred eighty-eight thousand, fifty-five".