677899197 has 12 divisors (see below), whose sum is σ = 979733820. Its totient is φ = 451680768.

The previous prime is 677899181. The next prime is 677899199. The reversal of 677899197 is 791998776.

It can be written as a sum of positive squares in 2 ways, for example, as 157101156 + 520798041 = 12534^2 + 22821^2 .

It is not a de Polignac number, because 677899197 - 2⁴ = 677899181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677899199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3172 + ... + 36957.

It is an arithmetic number, because the mean of its divisors is an integer number (81644485).

Almost surely, 2^677899197 is an apocalyptic number.

It is an amenable number.

677899197 is a deficient number, since it is larger than the sum of its proper divisors (301834623).

677899197 is a wasteful number, since it uses less digits than its factorization.

677899197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42012 (or 42009 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 63.

The square root of 677899197 is about 26036.4974026846. The cubic root of 677899197 is about 878.4594244799.

The spelling of 677899197 in words is "six hundred seventy-seven million, eight hundred ninety-nine thousand, one hundred ninety-seven".