688336 has 20 divisors (see below), whose sum is σ = 1455264. Its totient is φ = 312800.

The previous prime is 688333. The next prime is 688339. The reversal of 688336 is 633886.

It is an interprime number because it is at equal distance from previous prime (688333) and next prime (688339).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780 + ... + 2131.

2⁶⁸⁸³³⁶ is an apocalyptic number.

It is an amenable number.

688336 is an abundant number, since it is smaller than the sum of its proper divisors (766928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688336 is a wasteful number, since it uses less digits than its factorization.

688336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930 (or 3924 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 688336 is about 829.6601713955. The cubic root of 688336 is about 88.2944680889.

It can be divided in two parts, 688 and 336, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 688336 in words is "six hundred eighty-eight thousand, three hundred thirty-six".