684881148146 has 32 divisors (see below), whose sum is σ = 1109298274560. Its totient is φ = 315256322304.

The previous prime is 684881148079. The next prime is 684881148173. The reversal of 684881148146 is 641841188486.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 25615541 + ... + 25642263.

It is an arithmetic number, because the mean of its divisors is an integer number (34665571080).

Almost surely, 2^684881148146 is an apocalyptic number.

684881148146 is a deficient number, since it is larger than the sum of its proper divisors (424417126414).

684881148146 is a wasteful number, since it uses less digits than its factorization.

684881148146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29330.

The product of its digits is 9437184, while the sum is 59.

The spelling of 684881148146 in words is "six hundred eighty-four billion, eight hundred eighty-one million, one hundred forty-eight thousand, one hundred forty-six".