684268 has 12 divisors (see below), whose sum is σ = 1289680. Its totient is φ = 315792.

The previous prime is 684239. The next prime is 684269. The reversal of 684268 is 862486.

684268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (684269) by changing a digit.

684268 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6528 + ... + 6631.

2⁶⁸⁴²⁶⁸ is an apocalyptic number.

It is an amenable number.

684268 is a deficient number, since it is larger than the sum of its proper divisors (605412).

684268 is a wasteful number, since it uses less digits than its factorization.

684268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13176 (or 13174 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 684268 is about 827.2049322870. The cubic root of 684268 is about 88.1201870181.

The spelling of 684268 in words is "six hundred eighty-four thousand, two hundred sixty-eight".