866353152 has 128 divisors (see below), whose sum is σ = 2642371200. Its totient is φ = 247332864.

The previous prime is 866353139. The next prime is 866353157. The reversal of 866353152 is 251353668.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 866353152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866353157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687499 + ... + 688757.

It is an arithmetic number, because the mean of its divisors is an integer number (20643525).

Almost surely, 2^866353152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866353152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321185600).

866353152 is an abundant number, since it is smaller than the sum of its proper divisors (1776018048).

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

866353152 is an equidigital number, since it uses as much as digits as its factorization.

866353152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1271 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 866353152 is about 29433.8776242615. The cubic root of 866353152 is about 953.3045223605.

The spelling of 866353152 in words is "eight hundred sixty-six million, three hundred fifty-three thousand, one hundred fifty-two".