684486 has 24 divisors (see below), whose sum is σ = 1618344. Its totient is φ = 207360.

The previous prime is 684473. The next prime is 684493.

684486 is nontrivially palindromic in base 10.

684486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 684486.

It is a congruent number.

It is an unprimeable number.

684486 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 11 ways as a sum of consecutive naturals, for example, 1531 + ... + 1926.

It is an arithmetic number, because the mean of its divisors is an integer number (67431).

2⁶⁸⁴⁴⁸⁶ is an apocalyptic number.

684486 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

684486 is an abundant number, since it is smaller than the sum of its proper divisors (933858).

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

684486 is a wasteful number, since it uses less digits than its factorization.

684486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476 (or 3473 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 684486 is about 827.3366908339. The cubic root of 684486 is about 88.1295440542.

It can be divided in two parts, 68 and 4486, that added together give a palindrome (4554).

The spelling of 684486 in words is "six hundred eighty-four thousand, four hundred eighty-six".