677566656 has 168 divisors, whose sum is σ = 2143499904. Its totient is φ = 203304960.

The previous prime is 677566639. The next prime is 677566661. The reversal of 677566656 is 656665776.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305905 + ... + 308111.

It is an arithmetic number, because the mean of its divisors is an integer number (12758928).

Almost surely, 2^677566656 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 677566656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071749952).

677566656 is an abundant number, since it is smaller than the sum of its proper divisors (1465933248).

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

677566656 is a wasteful number, since it uses less digits than its factorization.

677566656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279 (or 2266 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The square root of 677566656 is about 26030.1105644982. The cubic root of 677566656 is about 878.3157592878.

The spelling of 677566656 in words is "six hundred seventy-seven million, five hundred sixty-six thousand, six hundred fifty-six".