866020208862 has 8 divisors (see below), whose sum is σ = 1732040417736. Its totient is φ = 288673402952.

The previous prime is 866020208861. The next prime is 866020208869. The reversal of 866020208862 is 268802020668.

It is a sphenic number, since it is the product of 3 distinct primes.

866020208862 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866020208861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72168350733 + ... + 72168350744.

It is an arithmetic number, because the mean of its divisors is an integer number (216505052217).

Almost surely, 2^866020208862 is an apocalyptic number.

866020208862 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

866020208862 is a wasteful number, since it uses less digits than its factorization.

866020208862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144336701482.

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 866020208862 in words is "eight hundred sixty-six billion, twenty million, two hundred eight thousand, eight hundred sixty-two".