684361 has 8 divisors (see below), whose sum is σ = 728000. Its totient is φ = 641520.

The previous prime is 684349. The next prime is 684373. The reversal of 684361 is 163486.

It is an interprime number because it is at equal distance from previous prime (684349) and next prime (684373).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 684361 - 2⁵ = 684329 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3340 + ... + 3538.

It is an arithmetic number, because the mean of its divisors is an integer number (91000).

2⁶⁸⁴³⁶¹ is an apocalyptic number.

It is an amenable number.

684361 is a deficient number, since it is larger than the sum of its proper divisors (43639).

684361 is a wasteful number, since it uses less digits than its factorization.

684361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

The product of its digits is 3456, while the sum is 28.

The square root of 684361 is about 827.2611437750. The cubic root of 684361 is about 88.1241790243.

The spelling of 684361 in words is "six hundred eighty-four thousand, three hundred sixty-one".