685059 has 4 divisors (see below), whose sum is σ = 913416. Its totient is φ = 456704.

The previous prime is 685057. The next prime is 685063. The reversal of 685059 is 950586.

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 685059 - 2¹ = 685057 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (685051) 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, 114174 + ... + 114179.

It is an arithmetic number, because the mean of its divisors is an integer number (228354).

2⁶⁸⁵⁰⁵⁹ is an apocalyptic number.

685059 is a deficient number, since it is larger than the sum of its proper divisors (228357).

685059 is a wasteful number, since it uses less digits than its factorization.

685059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228356.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 685059 is about 827.6829102984. The cubic root of 685059 is about 88.1541289954.

The spelling of 685059 in words is "six hundred eighty-five thousand, fifty-nine".