684542646245486 has 16 divisors (see below), whose sum is σ = 1173627551182464. Its totient is φ = 293343951843384.

The previous prime is 684542646245467. The next prime is 684542646245533.

684542646245486 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2622196160 + ... + 2622457203.

It is an arithmetic number, because the mean of its divisors is an integer number (73351721948904).

Almost surely, 2^{684542646245486} is an apocalyptic number.

684542646245486 is a deficient number, since it is larger than the sum of its proper divisors (489084904936978).

684542646245486 is a wasteful number, since it uses less digits than its factorization.

684542646245486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5244662695.

The product of its digits is 8493465600, while the sum is 74.

The spelling of 684542646245486 in words is "six hundred eighty-four trillion, five hundred forty-two billion, six hundred forty-six million, two hundred forty-five thousand, four hundred eighty-six".