684452 has 12 divisors (see below), whose sum is σ = 1207500. Its totient is φ = 339456.

The previous prime is 684451. The next prime is 684469. The reversal of 684452 is 254486.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 343396 = 584^2 + 586^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 77 + ... + 1172.

It is an arithmetic number, because the mean of its divisors is an integer number (100625).

2⁶⁸⁴⁴⁵² is an apocalyptic number.

It is an amenable number.

684452 is a deficient number, since it is larger than the sum of its proper divisors (523048).

684452 is a wasteful number, since it uses less digits than its factorization.

684452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390 (or 1388 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 684452 is about 827.3161427169. The cubic root of 684452 is about 88.1280848307.

The spelling of 684452 in words is "six hundred eighty-four thousand, four hundred fifty-two".