688696 has 16 divisors (see below), whose sum is σ = 1333440. Its totient is φ = 333120.

The previous prime is 688679. The next prime is 688697. The reversal of 688696 is 696886.

It is a super-3 number, since 3×688696³ = 979950043331332608, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (83340).

2⁶⁸⁸⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

688696 is a deficient number, since it is larger than the sum of its proper divisors (644744).

688696 is a wasteful number, since it uses less digits than its factorization.

688696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814 (or 2810 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 688696 is about 829.8770993346. The cubic root of 688696 is about 88.3098580868.

It can be divided in two parts, 68 and 8696, that multiplied together give a triangular number (591328 = T₁₀₈₇).

The spelling of 688696 in words is "six hundred eighty-eight thousand, six hundred ninety-six".