678540176 has 80 divisors (see below), whose sum is σ = 1423033920. Its totient is φ = 312299520.

The previous prime is 678540157. The next prime is 678540199. The reversal of 678540176 is 671045876.

It is a super-2 number, since 2×678540176² = 920833540892221952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4881515 + ... + 4881653.

It is an arithmetic number, because the mean of its divisors is an integer number (17787924).

Almost surely, 2^678540176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678540176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711516960).

678540176 is an abundant number, since it is smaller than the sum of its proper divisors (744493744).

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

678540176 is a wasteful number, since it uses less digits than its factorization.

678540176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 678540176 is about 26048.8037345288. The cubic root of 678540176 is about 878.7362093225.

The spelling of 678540176 in words is "six hundred seventy-eight million, five hundred forty thousand, one hundred seventy-six".