218068 has 6 divisors (see below), whose sum is σ = 381626. Its totient is φ = 109032.

The previous prime is 218047. The next prime is 218069. The reversal of 218068 is 860812.

It can be written as a sum of positive squares in only one way, i.e., 213444 + 4624 = 462^2 + 68^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27255 + ... + 27262.

2²¹⁸⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

218068 is a deficient number, since it is larger than the sum of its proper divisors (163558).

218068 is a wasteful number, since it uses less digits than its factorization.

218068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54521 (or 54519 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 218068 is about 466.9775155187. The cubic root of 218068 is about 60.1908736252.

It can be divided in two parts, 2180 and 68, that multiplied together give a triangular number (148240 = T₅₄₄).

The spelling of 218068 in words is "two hundred eighteen thousand, sixty-eight".