866204564 has 12 divisors (see below), whose sum is σ = 1581765024. Its totient is φ = 414271704.

The previous prime is 866204539. The next prime is 866204569. The reversal of 866204564 is 465402668.

866204564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866204569) 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, 4707542 + ... + 4707725.

It is an arithmetic number, because the mean of its divisors is an integer number (131813752).

Almost surely, 2^866204564 is an apocalyptic number.

It is an amenable number.

866204564 is a deficient number, since it is larger than the sum of its proper divisors (715560460).

866204564 is a wasteful number, since it uses less digits than its factorization.

866204564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9415294 (or 9415292 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 866204564 is about 29431.3534177414. The cubic root of 866204564 is about 953.2500189090.

The spelling of 866204564 in words is "eight hundred sixty-six million, two hundred four thousand, five hundred sixty-four".