684453 has 16 divisors (see below), whose sum is σ = 1138176. Its totient is φ = 355440.

The previous prime is 684451. The next prime is 684469. The reversal of 684453 is 354486.

684453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 684453 - 2¹ = 684451 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 684453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1251 + ... + 1712.

It is an arithmetic number, because the mean of its divisors is an integer number (71136).

2⁶⁸⁴⁴⁵³ is an apocalyptic number.

It is an amenable number.

684453 is a deficient number, since it is larger than the sum of its proper divisors (453723).

684453 is a wasteful number, since it uses less digits than its factorization.

684453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984.

The product of its digits is 11520, while the sum is 30.

The square root of 684453 is about 827.3167470806. The cubic root of 684453 is about 88.1281277498.

The spelling of 684453 in words is "six hundred eighty-four thousand, four hundred fifty-three".