677816208 has 80 divisors (see below), whose sum is σ = 1970310400. Its totient is φ = 223067520.

The previous prime is 677816207. The next prime is 677816219. The reversal of 677816208 is 802618776.

It is not an unprimeable number, because it can be changed into a prime (677816207) by changing a digit.

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, 24198 + ... + 44058.

It is an arithmetic number, because the mean of its divisors is an integer number (24628880).

Almost surely, 2^677816208 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 677816208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985155200).

677816208 is an abundant number, since it is smaller than the sum of its proper divisors (1292494192).

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

677816208 is a wasteful number, since it uses less digits than its factorization.

677816208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19957 (or 19945 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 677816208 is about 26034.9036487558. The cubic root of 677816208 is about 878.4235757655.

The spelling of 677816208 in words is "six hundred seventy-seven million, eight hundred sixteen thousand, two hundred eight".