677177988 has 12 divisors (see below), whose sum is σ = 1580082000. Its totient is φ = 225725992.

The previous prime is 677177971. The next prime is 677177999. The reversal of 677177988 is 889771776.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 28215738 + ... + 28215761.

It is an arithmetic number, because the mean of its divisors is an integer number (131673500).

Almost surely, 2^677177988 is an apocalyptic number.

It is an amenable number.

677177988 is an abundant number, since it is smaller than the sum of its proper divisors (902904012).

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

677177988 is a wasteful number, since it uses less digits than its factorization.

677177988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56431506 (or 56431504 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 60.

The square root of 677177988 is about 26022.6437550069. The cubic root of 677177988 is about 878.1477863803.

The spelling of 677177988 in words is "six hundred seventy-seven million, one hundred seventy-seven thousand, nine hundred eighty-eight".