684256107973 has 16 divisors (see below), whose sum is σ = 725594252800. Its totient is φ = 643466663280.

The previous prime is 684256107961. The next prime is 684256108043. The reversal of 684256107973 is 379701652486.

It is a cyclic number.

It is not a de Polignac number, because 684256107973 - 2⁹ = 684256107461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684256107923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294240 + ... + 1744582.

It is an arithmetic number, because the mean of its divisors is an integer number (45349640800).

It is a 1-persistent number, because it is pandigital, but 2⋅684256107973 = 1368512215946 is not.

Almost surely, 2^684256107973 is an apocalyptic number.

It is an amenable number.

684256107973 is a deficient number, since it is larger than the sum of its proper divisors (41338144827).

684256107973 is a wasteful number, since it uses less digits than its factorization.

684256107973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450952.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 684256107973 in words is "six hundred eighty-four billion, two hundred fifty-six million, one hundred seven thousand, nine hundred seventy-three".