866840832 has 288 divisors, whose sum is σ = 3014981760. Its totient is φ = 242196480.

The previous prime is 866840831. The next prime is 866840833. The reversal of 866840832 is 238048668.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (866840831) and next prime (866840833).

It is a tau number, because it is divible by the number of its divisors (288).

It is not an unprimeable number, because it can be changed into a prime (866840831) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 987978 + ... + 988854.

Almost surely, 2^866840832 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 866840832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507490880).

866840832 is an abundant number, since it is smaller than the sum of its proper divisors (2148140928).

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

866840832 is a wasteful number, since it uses less digits than its factorization.

866840832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 866840832 is about 29442.1607902681. The cubic root of 866840832 is about 953.4833641111.

The spelling of 866840832 in words is "eight hundred sixty-six million, eight hundred forty thousand, eight hundred thirty-two".