18065684 has 48 divisors (see below), whose sum is σ = 40190976. Its totient is φ = 6912000.

The previous prime is 18065683. The next prime is 18065693. The reversal of 18065684 is 48656081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18065681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10484 + ... + 12084.

It is an arithmetic number, because the mean of its divisors is an integer number (837312).

Almost surely, 2^18065684 is an apocalyptic number.

18065684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18065684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20095488).

18065684 is an abundant number, since it is smaller than the sum of its proper divisors (22125292).

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

18065684 is a wasteful number, since it uses less digits than its factorization.

18065684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1654 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 18065684 is about 4250.3745717289. The cubic root of 18065684 is about 262.3925316695.

The spelling of 18065684 in words is "eighteen million, sixty-five thousand, six hundred eighty-four".