684354 has 16 divisors (see below), whose sum is σ = 1493280. Its totient is φ = 207360.

The previous prime is 684349. The next prime is 684373. The reversal of 684354 is 453486.

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, 5119 + ... + 5250.

It is an arithmetic number, because the mean of its divisors is an integer number (93330).

2⁶⁸⁴³⁵⁴ is an apocalyptic number.

684354 is an abundant number, since it is smaller than the sum of its proper divisors (808926).

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

684354 is a wasteful number, since it uses less digits than its factorization.

684354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10385.

The product of its digits is 11520, while the sum is 30.

The square root of 684354 is about 827.2569129358. The cubic root of 684354 is about 88.1238785633.

The spelling of 684354 in words is "six hundred eighty-four thousand, three hundred fifty-four".