866820200 has 48 divisors (see below), whose sum is σ = 2019454080. Its totient is φ = 346023360.

The previous prime is 866820193. The next prime is 866820239. The reversal of 866820200 is 2028668.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 100457 + ... + 108743.

It is an arithmetic number, because the mean of its divisors is an integer number (42071960).

Almost surely, 2^866820200 is an apocalyptic number.

It is an amenable number.

866820200 is an abundant number, since it is smaller than the sum of its proper divisors (1152633880).

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

866820200 is a wasteful number, since it uses less digits than its factorization.

866820200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8826 (or 8817 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 866820200 is about 29441.8104062913. The cubic root of 866820200 is about 953.4757993140.

Adding to 866820200 its reverse (2028668), we get a palindrome (868848868).

It can be divided in two parts, 86 and 6820200, that added together give a palindrome (6820286).

The spelling of 866820200 in words is "eight hundred sixty-six million, eight hundred twenty thousand, two hundred".