688022 has 8 divisors (see below), whose sum is σ = 1076976. Its totient is φ = 329032.

The previous prime is 688013. The next prime is 688027. The reversal of 688022 is 220886.

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

It is a junction number, because it is equal to n+sod(n) for n = 687982 and 688000.

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 688022.

It is not an unprimeable number, because it can be changed into a prime (688027) by changing a digit.

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, 7433 + ... + 7524.

It is an arithmetic number, because the mean of its divisors is an integer number (134622).

2⁶⁸⁸⁰²² is an apocalyptic number.

688022 is a deficient number, since it is larger than the sum of its proper divisors (388954).

688022 is a wasteful number, since it uses less digits than its factorization.

688022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14982.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 688022 is about 829.4709157047. The cubic root of 688022 is about 88.2810402089.

The spelling of 688022 in words is "six hundred eighty-eight thousand, twenty-two".