866289606 has 144 divisors (see below), whose sum is σ = 2232963072. Its totient is φ = 219360960.

The previous prime is 866289581. The next prime is 866289631. The reversal of 866289606 is 606982668.

866289606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (866289581) and next prime (866289631).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6821115 + ... + 6821241.

It is an arithmetic number, because the mean of its divisors is an integer number (15506688).

Almost surely, 2^866289606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866289606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116481536).

866289606 is an abundant number, since it is smaller than the sum of its proper divisors (1366673466).

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

866289606 is a wasteful number, since it uses less digits than its factorization.

866289606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 866289606 is about 29432.7981340545. The cubic root of 866289606 is about 953.2812138632.

The spelling of 866289606 in words is "eight hundred sixty-six million, two hundred eighty-nine thousand, six hundred six".