218021714 has 8 divisors (see below), whose sum is σ = 328214028. Its totient is φ = 108617040.

The previous prime is 218021689. The next prime is 218021743. The reversal of 218021714 is 417120812.

It can be written as a sum of positive squares in 2 ways, for example, as 214476025 + 3545689 = 14645^2 + 1883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×218021714³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196217 + ... + 197324.

Almost surely, 2^218021714 is an apocalyptic number.

218021714 is a deficient number, since it is larger than the sum of its proper divisors (110192314).

218021714 is a wasteful number, since it uses less digits than its factorization.

218021714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393820.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 218021714 is about 14765.5583707491. The cubic root of 218021714 is about 601.8661472142.

The spelling of 218021714 in words is "two hundred eighteen million, twenty-one thousand, seven hundred fourteen".