684532 has 12 divisors (see below), whose sum is σ = 1261120. Its totient is φ = 324216.

The previous prime is 684527. The next prime is 684547. The reversal of 684532 is 235486.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 684532.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 4428 + ... + 4579.

2⁶⁸⁴⁵³² is an apocalyptic number.

It is an amenable number.

684532 is a deficient number, since it is larger than the sum of its proper divisors (576588).

684532 is a wasteful number, since it uses less digits than its factorization.

684532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9030 (or 9028 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 684532 is about 827.3644904152. The cubic root of 684532 is about 88.1315182208.

The spelling of 684532 in words is "six hundred eighty-four thousand, five hundred thirty-two".