684272 has 10 divisors (see below), whose sum is σ = 1325808. Its totient is φ = 342128.

The previous prime is 684269. The next prime is 684287. The reversal of 684272 is 272486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21368 + ... + 21399.

2⁶⁸⁴²⁷² is an apocalyptic number.

It is an amenable number.

684272 is a deficient number, since it is larger than the sum of its proper divisors (641536).

684272 is a wasteful number, since it uses less digits than its factorization.

684272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42775 (or 42769 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 684272 is about 827.2073500641. The cubic root of 684272 is about 88.1203587248.

The spelling of 684272 in words is "six hundred eighty-four thousand, two hundred seventy-two".