868020680 has 32 divisors (see below), whose sum is σ = 2067933240. Its totient is φ = 326784000.

The previous prime is 868020679. The next prime is 868020683. The reversal of 868020680 is 86020868.

It can be written as a sum of positive squares in 4 ways, for example, as 673194916 + 194825764 = 25946^2 + 13958^2 .

It is not an unprimeable number, because it can be changed into a prime (868020683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637571 + ... + 638930.

Almost surely, 2^868020680 is an apocalyptic number.

It is an amenable number.

868020680 is an abundant number, since it is smaller than the sum of its proper divisors (1199912560).

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

868020680 is a wasteful number, since it uses less digits than its factorization.

868020680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276529 (or 1276525 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 868020680 is about 29462.1906856907. The cubic root of 868020680 is about 953.9157600756.

The spelling of 868020680 in words is "eight hundred sixty-eight million, twenty thousand, six hundred eighty".