685017 has 12 divisors (see below), whose sum is σ = 1026480. Its totient is φ = 456516.

The previous prime is 685001. The next prime is 685019. The reversal of 685017 is 710586.

It is not a de Polignac number, because 685017 - 2⁴ = 685001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (685019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1167 + ... + 1652.

It is an arithmetic number, because the mean of its divisors is an integer number (85540).

2⁶⁸⁵⁰¹⁷ is an apocalyptic number.

It is an amenable number.

685017 is a deficient number, since it is larger than the sum of its proper divisors (341463).

685017 is an equidigital number, since it uses as much as digits as its factorization.

685017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834 (or 2822 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 685017 is about 827.6575378742. The cubic root of 685017 is about 88.1523274235.

The spelling of 685017 in words is "six hundred eighty-five thousand, seventeen".