684472 has 16 divisors (see below), whose sum is σ = 1303560. Its totient is φ = 336864.

The previous prime is 684469. The next prime is 684473. The reversal of 684472 is 274486.

684472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684473) 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, 103 + ... + 1174.

2⁶⁸⁴⁴⁷² is an apocalyptic number.

It is an amenable number.

684472 is a deficient number, since it is larger than the sum of its proper divisors (619088).

684472 is a wasteful number, since it uses less digits than its factorization.

684472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1346 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 684472 is about 827.3282299064. The cubic root of 684472 is about 88.1289432033.

It can be divided in two parts, 684 and 472, that added together give a square (1156 = 34²).

The spelling of 684472 in words is "six hundred eighty-four thousand, four hundred seventy-two".