684248 has 8 divisors (see below), whose sum is σ = 1282980. Its totient is φ = 342120.

The previous prime is 684239. The next prime is 684269. The reversal of 684248 is 842486.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

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, 42758 + ... + 42773.

2⁶⁸⁴²⁴⁸ is an apocalyptic number.

It is an amenable number.

684248 is a deficient number, since it is larger than the sum of its proper divisors (598732).

684248 is a wasteful number, since it uses less digits than its factorization.

684248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85537 (or 85533 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The square root of 684248 is about 827.1928432959. The cubic root of 684248 is about 88.1193284749.

The spelling of 684248 in words is "six hundred eighty-four thousand, two hundred forty-eight".