868090977796 has 81 divisors (see below), whose sum is σ = 1798278659541. Its totient is φ = 365604573600.

The previous prime is 868090977791. The next prime is 868090977869. The reversal of 868090977796 is 697779090868.

The square root of 868090977796 is 931714.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 28228704196 + 839862273600 = 168014^2 + 916440^2 .

It is not an unprimeable number, because it can be changed into a prime (868090977791) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 795683211 + ... + 795684301.

Almost surely, 2^868090977796 is an apocalyptic number.

868090977796 is the 931714-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868090977796

868090977796 is an abundant number, since it is smaller than the sum of its proper divisors (930187681745).

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

868090977796 is an equidigital number, since it uses as much as digits as its factorization.

868090977796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 576108288, while the sum is 76.

The spelling of 868090977796 in words is "eight hundred sixty-eight billion, ninety million, nine hundred seventy-seven thousand, seven hundred ninety-six".