685416 has 16 divisors (see below), whose sum is σ = 1713600. Its totient is φ = 228464.

The previous prime is 685393. The next prime is 685417. The reversal of 685416 is 614586.

685416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (685417) by changing a digit.

685416 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14256 + ... + 14303.

It is an arithmetic number, because the mean of its divisors is an integer number (107100).

2⁶⁸⁵⁴¹⁶ is an apocalyptic number.

It is an amenable number.

685416 is an abundant number, since it is smaller than the sum of its proper divisors (1028184).

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

685416 is a wasteful number, since it uses less digits than its factorization.

685416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28568 (or 28564 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 685416 is about 827.8985445089. The cubic root of 685416 is about 88.1694393842.

The spelling of 685416 in words is "six hundred eighty-five thousand, four hundred sixteen".