688363 has 4 divisors (see below), whose sum is σ = 741328. Its totient is φ = 635400.

The previous prime is 688357. The next prime is 688379. The reversal of 688363 is 363886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 363886 = 2 ⋅181943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-688363 is a prime.

It is a Duffinian 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, 26463 + ... + 26488.

It is an arithmetic number, because the mean of its divisors is an integer number (185332).

2⁶⁸⁸³⁶³ is an apocalyptic number.

688363 is a deficient number, since it is larger than the sum of its proper divisors (52965).

688363 is a wasteful number, since it uses less digits than its factorization.

688363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52964.

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

The square root of 688363 is about 829.6764429583. The cubic root of 688363 is about 88.2956225249.

The spelling of 688363 in words is "six hundred eighty-eight thousand, three hundred sixty-three".