866976679668 has 48 divisors (see below), whose sum is σ = 2217939494400. Its totient is φ = 261399996000.

The previous prime is 866976679603. The next prime is 866976679669.

866976679668 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866976679669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16476258 + ... + 16528793.

It is an arithmetic number, because the mean of its divisors is an integer number (46207072800).

Almost surely, 2^866976679668 is an apocalyptic number.

It is an amenable number.

866976679668 is an abundant number, since it is smaller than the sum of its proper divisors (1350962814732).

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

866976679668 is a wasteful number, since it uses less digits than its factorization.

866976679668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33005268 (or 33005266 counting only the distinct ones).

The product of its digits is 11851370496, while the sum is 84.

The spelling of 866976679668 in words is "eight hundred sixty-six billion, nine hundred seventy-six million, six hundred seventy-nine thousand, six hundred sixty-eight".