685383 has 4 divisors (see below), whose sum is σ = 913848. Its totient is φ = 456920.

The previous prime is 685381. The next prime is 685393. The reversal of 685383 is 383586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 685383 - 2¹ = 685381 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114228 + ... + 114233.

It is an arithmetic number, because the mean of its divisors is an integer number (228462).

2⁶⁸⁵³⁸³ is an apocalyptic number.

685383 is a deficient number, since it is larger than the sum of its proper divisors (228465).

685383 is a wasteful number, since it uses less digits than its factorization.

685383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228464.

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

The square root of 685383 is about 827.8786142908. The cubic root of 685383 is about 88.1680243612.

The spelling of 685383 in words is "six hundred eighty-five thousand, three hundred eighty-three".