673684563318 has 32 divisors (see below), whose sum is σ = 1451732636256. Its totient is φ = 207184739328.

The previous prime is 673684563313. The next prime is 673684563329. The reversal of 673684563318 is 813365486376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673684563313) 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, 1983721 + ... + 2298372.

It is an arithmetic number, because the mean of its divisors is an integer number (45366644883).

Almost surely, 2^673684563318 is an apocalyptic number.

673684563318 is an abundant number, since it is smaller than the sum of its proper divisors (778048072938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673684563318 is a wasteful number, since it uses less digits than its factorization.

673684563318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284128.

The product of its digits is 52254720, while the sum is 60.

The spelling of 673684563318 in words is "six hundred seventy-three billion, six hundred eighty-four million, five hundred sixty-three thousand, three hundred eighteen".