685026 has 24 divisors (see below), whose sum is σ = 1563120. Its totient is φ = 216216.

The previous prime is 685019. The next prime is 685031. The reversal of 685026 is 620586.

685026 is nontrivially palindromic in base 8.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 660 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (65130).

2⁶⁸⁵⁰²⁶ is an apocalyptic number.

685026 is an abundant number, since it is smaller than the sum of its proper divisors (878094).

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

685026 is a wasteful number, since it uses less digits than its factorization.

685026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 685026 is about 827.6629748877. The cubic root of 685026 is about 88.1527134808.

The spelling of 685026 in words is "six hundred eighty-five thousand, twenty-six".