684088 has 16 divisors (see below), whose sum is σ = 1291680. Its totient is φ = 339648.

The previous prime is 684053. The next prime is 684091. The reversal of 684088 is 880486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1681 + ... + 2047.

It is an arithmetic number, because the mean of its divisors is an integer number (80730).

2⁶⁸⁴⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

684088 is a deficient number, since it is larger than the sum of its proper divisors (607592).

684088 is a wasteful number, since it uses less digits than its factorization.

684088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 684088 is about 827.0961250060. The cubic root of 684088 is about 88.1124595270.

The spelling of 684088 in words is "six hundred eighty-four thousand, eighty-eight".