684575383857 has 16 divisors (see below), whose sum is σ = 915650241792. Its totient is φ = 454942575360.

The previous prime is 684575383847. The next prime is 684575383871. The reversal of 684575383857 is 758383575486.

It is not a de Polignac number, because 684575383857 - 2⁴ = 684575383841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 684575383791 and 684575383800.

It is not an unprimeable number, because it can be changed into a prime (684575383847) 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, 5475432 + ... + 5599062.

It is an arithmetic number, because the mean of its divisors is an integer number (57228140112).

Almost surely, 2^684575383857 is an apocalyptic number.

It is an amenable number.

684575383857 is a deficient number, since it is larger than the sum of its proper divisors (231074857935).

684575383857 is a wasteful number, since it uses less digits than its factorization.

684575383857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129448.

The product of its digits is 677376000, while the sum is 69.

The spelling of 684575383857 in words is "six hundred eighty-four billion, five hundred seventy-five million, three hundred eighty-three thousand, eight hundred fifty-seven".