684367 has 4 divisors (see below), whose sum is σ = 698976. Its totient is φ = 669760.

The previous prime is 684349. The next prime is 684373. The reversal of 684367 is 763486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 684367 - 2⁷ = 684239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 684367.

It is not an unprimeable number, because it can be changed into a prime (684337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7234 + ... + 7327.

It is an arithmetic number, because the mean of its divisors is an integer number (174744).

2⁶⁸⁴³⁶⁷ is an apocalyptic number.

684367 is a deficient number, since it is larger than the sum of its proper divisors (14609).

684367 is a wasteful number, since it uses less digits than its factorization.

684367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14608.

The product of its digits is 24192, while the sum is 34.

The square root of 684367 is about 827.2647701915. The cubic root of 684367 is about 88.1244365606.

The spelling of 684367 in words is "six hundred eighty-four thousand, three hundred sixty-seven".