861365032 has 64 divisors (see below), whose sum is σ = 1823653440. Its totient is φ = 377971200.

The previous prime is 861365003. The next prime is 861365041. The reversal of 861365032 is 230563168.

861365032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×861365032² = 1483899436704722048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445107 + ... + 447037.

It is an arithmetic number, because the mean of its divisors is an integer number (28494585).

Almost surely, 2^861365032 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 861365032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911826720).

861365032 is an abundant number, since it is smaller than the sum of its proper divisors (962288408).

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

861365032 is a wasteful number, since it uses less digits than its factorization.

861365032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 861365032 is about 29349.0209717462. The cubic root of 861365032 is about 951.4714158376.

The spelling of 861365032 in words is "eight hundred sixty-one million, three hundred sixty-five thousand, thirty-two".