8661834 has 72 divisors (see below), whose sum is σ = 20921472. Its totient is φ = 2585520.

The previous prime is 8661799. The next prime is 8661839. The reversal of 8661834 is 4381668.

It is a happy number.

8661834 is a `hidden beast` number, since 8 + 6 + 618 + 34 = 666.

It is not an unprimeable number, because it can be changed into a prime (8661839) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 201417 + ... + 201459.

It is an arithmetic number, because the mean of its divisors is an integer number (290576).

Almost surely, 2^8661834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8661834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10460736).

8661834 is an abundant number, since it is smaller than the sum of its proper divisors (12259638).

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

8661834 is a wasteful number, since it uses less digits than its factorization.

8661834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 98 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8661834 is about 2943.0993867010. The cubic root of 8661834 is about 205.3698182717.

The spelling of 8661834 in words is "eight million, six hundred sixty-one thousand, eight hundred thirty-four".