678767641804 has 48 divisors (see below), whose sum is σ = 1363504665600. Its totient is φ = 289621866240.

The previous prime is 678767641789. The next prime is 678767641807. The reversal of 678767641804 is 408146767876.

It is not an unprimeable number, because it can be changed into a prime (678767641807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34398189 + ... + 34417915.

It is an arithmetic number, because the mean of its divisors is an integer number (28406347200).

Almost surely, 2^678767641804 is an apocalyptic number.

It is an amenable number.

678767641804 is an abundant number, since it is smaller than the sum of its proper divisors (684737023796).

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

678767641804 is a wasteful number, since it uses less digits than its factorization.

678767641804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25078 (or 25076 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 64.

The spelling of 678767641804 in words is "six hundred seventy-eight billion, seven hundred sixty-seven million, six hundred forty-one thousand, eight hundred four".