677857668 has 24 divisors (see below), whose sum is σ = 1591375968. Its totient is φ = 224565696.

The previous prime is 677857601. The next prime is 677857669. The reversal of 677857668 is 866758776.

It is not an unprimeable number, because it can be changed into a prime (677857669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171321 + ... + 175232.

It is an arithmetic number, because the mean of its divisors is an integer number (66307332).

Almost surely, 2^677857668 is an apocalyptic number.

It is an amenable number.

677857668 is an abundant number, since it is smaller than the sum of its proper divisors (913518300).

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

677857668 is a wasteful number, since it uses less digits than its factorization.

677857668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346723 (or 346721 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 60.

The square root of 677857668 is about 26035.6998753634. The cubic root of 677857668 is about 878.4414855855.

It can be divided in two parts, 6778 and 57668, that added together give a palindrome (64446).

The spelling of 677857668 in words is "six hundred seventy-seven million, eight hundred fifty-seven thousand, six hundred sixty-eight".