684874 has 16 divisors (see below), whose sum is σ = 1101600. Its totient is φ = 318384.

The previous prime is 684869. The next prime is 684889. The reversal of 684874 is 478486.

684874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2412 + ... + 2680.

It is an arithmetic number, because the mean of its divisors is an integer number (68850).

2⁶⁸⁴⁸⁷⁴ is an apocalyptic number.

684874 is a deficient number, since it is larger than the sum of its proper divisors (416726).

684874 is a wasteful number, since it uses less digits than its factorization.

684874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357.

The product of its digits is 43008, while the sum is 37.

The square root of 684874 is about 827.5711449779. The cubic root of 684874 is about 88.1461929480.

The spelling of 684874 in words is "six hundred eighty-four thousand, eight hundred seventy-four".