218674066 has 16 divisors (see below), whose sum is σ = 353516184. Its totient is φ = 100848384.

The previous prime is 218674063. The next prime is 218674109. The reversal of 218674066 is 660476812.

It can be written as a sum of positive squares in 4 ways, for example, as 114939841 + 103734225 = 10721^2 + 10185^2 .

It is not an unprimeable number, because it can be changed into a prime (218674063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43836 + ... + 48568.

Almost surely, 2^218674066 is an apocalyptic number.

218674066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

218674066 is a deficient number, since it is larger than the sum of its proper divisors (134842118).

218674066 is a wasteful number, since it uses less digits than its factorization.

218674066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 218674066 is about 14787.6321972113. The cubic root of 218674066 is about 602.4658392160.

The spelling of 218674066 in words is "two hundred eighteen million, six hundred seventy-four thousand, sixty-six".