685002 has 8 divisors (see below), whose sum is σ = 1370016. Its totient is φ = 228332.

The previous prime is 685001. The next prime is 685019. The reversal of 685002 is 200586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

685002 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 685002.

It is not an unprimeable number, because it can be changed into a prime (685001) 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, 57078 + ... + 57089.

It is an arithmetic number, because the mean of its divisors is an integer number (171252).

2⁶⁸⁵⁰⁰² is an apocalyptic number.

685002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685002 is a wasteful number, since it uses less digits than its factorization.

685002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114172.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 685002 is about 827.6484761056. The cubic root of 685002 is about 88.1516839872.

Adding to 685002 its reverse (200586), we get a palindrome (885588).

Subtracting from 685002 its reverse (200586), we obtain a square (484416 = 696²).

The spelling of 685002 in words is "six hundred eighty-five thousand, two".