683385 has 16 divisors (see below), whose sum is σ = 1131840. Its totient is φ = 351680.

The previous prime is 683381. The next prime is 683401. The reversal of 683385 is 583386.

It is not a de Polignac number, because 683385 - 2² = 683381 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (683381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351 + ... + 1220.

It is an arithmetic number, because the mean of its divisors is an integer number (70740).

2⁶⁸³³⁸⁵ is an apocalyptic number.

It is an amenable number.

683385 is a deficient number, since it is larger than the sum of its proper divisors (448455).

683385 is a wasteful number, since it uses less digits than its factorization.

683385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its digits is 17280, while the sum is 33.

The square root of 683385 is about 826.6710349347. The cubic root of 683385 is about 88.0822663892.

Subtracting from 683385 its reverse (583386), we obtain a palindrome (99999).

The spelling of 683385 in words is "six hundred eighty-three thousand, three hundred eighty-five".