677771838 has 48 divisors (see below), whose sum is σ = 1555182720. Its totient is φ = 212733648.

The previous prime is 677771761. The next prime is 677771863. The reversal of 677771838 is 838177776.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 51181 + ... + 63047.

It is an arithmetic number, because the mean of its divisors is an integer number (32399640).

Almost surely, 2^677771838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677771838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777591360).

677771838 is an abundant number, since it is smaller than the sum of its proper divisors (877410882).

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

677771838 is a wasteful number, since it uses less digits than its factorization.

677771838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12061 (or 12058 counting only the distinct ones).

The product of its digits is 2765952, while the sum is 54.

The square root of 677771838 is about 26034.0515095135. The cubic root of 677771838 is about 878.4044080795.

The spelling of 677771838 in words is "six hundred seventy-seven million, seven hundred seventy-one thousand, eight hundred thirty-eight".