217234066 has 8 divisors (see below), whose sum is σ = 372401280. Its totient is φ = 93100308.

The previous prime is 217234051. The next prime is 217234091. The reversal of 217234066 is 660432712.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7758346 + ... + 7758373.

It is an arithmetic number, because the mean of its divisors is an integer number (46550160).

Almost surely, 2^217234066 is an apocalyptic number.

217234066 is a deficient number, since it is larger than the sum of its proper divisors (155167214).

217234066 is a wasteful number, since it uses less digits than its factorization.

217234066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15516728.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 217234066 is about 14738.8624391437. The cubic root of 217234066 is about 601.1404844887.

Adding to 217234066 its reverse (660432712), we get a palindrome (877666778).

The spelling of 217234066 in words is "two hundred seventeen million, two hundred thirty-four thousand, sixty-six".