18068 has 6 divisors (see below), whose sum is σ = 31626. Its totient is φ = 9032.

The previous prime is 18061. The next prime is 18077. The reversal of 18068 is 86081.

It can be written as a sum of positive squares in only one way, i.e., 9604 + 8464 = 98^2 + 92^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2255 + ... + 2262.

It is an arithmetic number, because the mean of its divisors is an integer number (5271).

2¹⁸⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

18068 is a deficient number, since it is larger than the sum of its proper divisors (13558).

18068 is a wasteful number, since it uses less digits than its factorization.

18068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521 (or 4519 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 18068 is about 134.4172607964. The cubic root of 18068 is about 26.2403743998.

The spelling of 18068 in words is "eighteen thousand, sixty-eight".