217245214 has 8 divisors (see below), whose sum is σ = 325934928. Its totient is φ = 108600240.

The previous prime is 217245211. The next prime is 217245229. The reversal of 217245214 is 412542712.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217245211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6634 + ... + 21874.

It is an arithmetic number, because the mean of its divisors is an integer number (40741866).

Almost surely, 2^217245214 is an apocalyptic number.

217245214 is a deficient number, since it is larger than the sum of its proper divisors (108689714).

217245214 is a wasteful number, since it uses less digits than its factorization.

217245214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22370.

The product of its digits is 4480, while the sum is 28.

The square root of 217245214 is about 14739.2406181594. The cubic root of 217245214 is about 601.1507674055.

Adding to 217245214 its reverse (412542712), we get a palindrome (629787926).

The spelling of 217245214 in words is "two hundred seventeen million, two hundred forty-five thousand, two hundred fourteen".