688795 has 8 divisors (see below), whose sum is σ = 831024. Its totient is φ = 548064.

The previous prime is 688783. The next prime is 688799. The reversal of 688795 is 597886.

It is a happy number.

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 688795 - 2⁵ = 688763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688799) 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, 1537 + ... + 1933.

It is an arithmetic number, because the mean of its divisors is an integer number (103878).

2⁶⁸⁸⁷⁹⁵ is an apocalyptic number.

688795 is a deficient number, since it is larger than the sum of its proper divisors (142229).

688795 is a wasteful number, since it uses less digits than its factorization.

688795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its digits is 120960, while the sum is 43.

The square root of 688795 is about 829.9367445776. The cubic root of 688795 is about 88.3140893960.

Subtracting from 688795 its reverse (597886), we obtain a palindrome (90909).

The spelling of 688795 in words is "six hundred eighty-eight thousand, seven hundred ninety-five".