685353 has 4 divisors (see below), whose sum is σ = 913808. Its totient is φ = 456900.

The previous prime is 685339. The next prime is 685361. The reversal of 685353 is 353586.

685353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 685353 - 2⁴ = 685337 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 685353.

It is not an unprimeable number, because it can be changed into a prime (685393) 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, 114223 + ... + 114228.

It is an arithmetic number, because the mean of its divisors is an integer number (228452).

2⁶⁸⁵³⁵³ is an apocalyptic number.

It is an amenable number.

685353 is a deficient number, since it is larger than the sum of its proper divisors (228455).

685353 is a wasteful number, since it uses less digits than its factorization.

685353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228454.

The product of its digits is 10800, while the sum is 30.

The square root of 685353 is about 827.8604954943. The cubic root of 685353 is about 88.1667379372.

The spelling of 685353 in words is "six hundred eighty-five thousand, three hundred fifty-three".