676666676 has 18 divisors (see below), whose sum is σ = 1377500418. Its totient is φ = 289999920.

The previous prime is 676666673. The next prime is 676666699.

676666676 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 560458276 + 116208400 = 23674^2 + 10780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676666673) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1725995 + ... + 1726386.

It is an arithmetic number, because the mean of its divisors is an integer number (76527801).

Almost surely, 2^676666676 is an apocalyptic number.

It is an amenable number.

676666676 is an abundant number, since it is smaller than the sum of its proper divisors (700833742).

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

676666676 is a wasteful number, since it uses less digits than its factorization.

676666676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452399 (or 3452390 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 56.

The square root of 676666676 is about 26012.8175329010. The cubic root of 676666676 is about 877.9267117806.

The spelling of 676666676 in words is "six hundred seventy-six million, six hundred sixty-six thousand, six hundred seventy-six".