684142017875 has 32 divisors (see below), whose sum is σ = 937822579200. Its totient is φ = 495963784800.

The previous prime is 684142017869. The next prime is 684142017893. The reversal of 684142017875 is 578710241486.

It is not a de Polignac number, because 684142017875 - 2⁸ = 684142017619 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6207545 + ... + 6316794.

It is an arithmetic number, because the mean of its divisors is an integer number (29306955600).

Almost surely, 2^684142017875 is an apocalyptic number.

684142017875 is a deficient number, since it is larger than the sum of its proper divisors (253680561325).

684142017875 is a wasteful number, since it uses less digits than its factorization.

684142017875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12524396 (or 12524386 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 684142017875 in words is "six hundred eighty-four billion, one hundred forty-two million, seventeen thousand, eight hundred seventy-five".