678484984803 has 32 divisors (see below), whose sum is σ = 990658916352. Its totient is φ = 411192038400.

The previous prime is 678484984763. The next prime is 678484984829. The reversal of 678484984803 is 308489484876.

It is a Cunningham number, because it is equal to 823702²-1.

It is not a de Polignac number, because 678484984803 - 2²⁰ = 678483936227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (678484984003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411850 + ... + 1235552.

It is an arithmetic number, because the mean of its divisors is an integer number (30958091136).

Almost surely, 2^678484984803 is an apocalyptic number.

678484984803 is a deficient number, since it is larger than the sum of its proper divisors (312173931549).

678484984803 is a wasteful number, since it uses less digits than its factorization.

678484984803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824275.

The product of its (nonzero) digits is 297271296, while the sum is 69.

The spelling of 678484984803 in words is "six hundred seventy-eight billion, four hundred eighty-four million, nine hundred eighty-four thousand, eight hundred three".