688983 has 8 divisors (see below), whose sum is σ = 930048. Its totient is φ = 453624.

The previous prime is 688979. The next prime is 688999. The reversal of 688983 is 389886.

688983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 688983 - 2² = 688979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688783) 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, 1135 + ... + 1632.

It is an arithmetic number, because the mean of its divisors is an integer number (116256).

2⁶⁸⁸⁹⁸³ is an apocalyptic number.

688983 is a deficient number, since it is larger than the sum of its proper divisors (241065).

688983 is a wasteful number, since it uses less digits than its factorization.

688983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853.

The product of its digits is 82944, while the sum is 42.

The square root of 688983 is about 830.0499984941. The cubic root of 688983 is about 88.3221234934.

It can be divided in two parts, 6889 and 83, that multiplied together give a cube (571787 = 83³).

The spelling of 688983 in words is "six hundred eighty-eight thousand, nine hundred eighty-three".