678927942364 has 24 divisors (see below), whose sum is σ = 1359254348928. Its totient is φ = 290669447280.

The previous prime is 678927942361. The next prime is 678927942391. The reversal of 678927942364 is 463249729876.

It is a super-2 number, since 2×678927942364² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 678927942364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678927942361) 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 7 ways as a sum of consecutive naturals, for example, 12458614 + ... + 12512989.

It is an arithmetic number, because the mean of its divisors is an integer number (56635597872).

Almost surely, 2^678927942364 is an apocalyptic number.

It is an amenable number.

678927942364 is an abundant number, since it is smaller than the sum of its proper divisors (680326406564).

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

678927942364 is a wasteful number, since it uses less digits than its factorization.

678927942364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24972585 (or 24972583 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 67.

The spelling of 678927942364 in words is "six hundred seventy-eight billion, nine hundred twenty-seven million, nine hundred forty-two thousand, three hundred sixty-four".