677741778 has 96 divisors (see below), whose sum is σ = 1744404480. Its totient is φ = 186092640.

The previous prime is 677741777. The next prime is 677741843. The reversal of 677741778 is 877147776.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (677741773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 651783 + ... + 652821.

It is an arithmetic number, because the mean of its divisors is an integer number (18170880).

Almost surely, 2^677741778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677741778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872202240).

677741778 is an abundant number, since it is smaller than the sum of its proper divisors (1066662702).

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

677741778 is a wasteful number, since it uses less digits than its factorization.

677741778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252 (or 1249 counting only the distinct ones).

The product of its digits is 3226944, while the sum is 54.

The square root of 677741778 is about 26033.4741822908. The cubic root of 677741778 is about 878.3914217886.

The spelling of 677741778 in words is "six hundred seventy-seven million, seven hundred forty-one thousand, seven hundred seventy-eight".