684948 has 24 divisors (see below), whose sum is σ = 1743840. Its totient is φ = 207520.

The previous prime is 684923. The next prime is 684949. The reversal of 684948 is 849486.

684948 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 (684949) by changing a digit.

684948 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 7 ways as a sum of consecutive naturals, for example, 2463 + ... + 2726.

It is an arithmetic number, because the mean of its divisors is an integer number (72660).

2⁶⁸⁴⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

684948 is an abundant number, since it is smaller than the sum of its proper divisors (1058892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

684948 is a wasteful number, since it uses less digits than its factorization.

684948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207 (or 5205 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 684948 is about 827.6158529173. The cubic root of 684948 is about 88.1493675384.

The spelling of 684948 in words is "six hundred eighty-four thousand, nine hundred forty-eight".