684130 has 24 divisors (see below), whose sum is σ = 1294812. Its totient is φ = 260064.

The previous prime is 684127. The next prime is 684157. The reversal of 684130 is 31486.

It can be written as a sum of positive squares in 2 ways, for example, as 667489 + 16641 = 817^2 + 129^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15889 + ... + 15931.

2⁶⁸⁴¹³⁰ is an apocalyptic number.

684130 is a deficient number, since it is larger than the sum of its proper divisors (610682).

684130 is a wasteful number, since it uses less digits than its factorization.

684130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 684130 is about 827.1215146519. The cubic root of 684130 is about 88.1142627295.

The spelling of 684130 in words is "six hundred eighty-four thousand, one hundred thirty".