16330217 has 4 divisors (see below), whose sum is σ = 17290836. Its totient is φ = 15369600.

The previous prime is 16330163. The next prime is 16330229. The reversal of 16330217 is 71203361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71203361 = 17 ⋅4188433.

It can be written as a sum of positive squares in 2 ways, for example, as 11397376 + 4932841 = 3376^2 + 2221^2 .

It is a cyclic number.

It is not a de Polignac number, because 16330217 - 2²² = 12135913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16330192 and 16330201.

It is not an unprimeable number, because it can be changed into a prime (16330417) 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, 480284 + ... + 480317.

It is an arithmetic number, because the mean of its divisors is an integer number (4322709).

Almost surely, 2^16330217 is an apocalyptic number.

16330217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16330217 is a deficient number, since it is larger than the sum of its proper divisors (960619).

16330217 is an equidigital number, since it uses as much as digits as its factorization.

16330217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960618.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 16330217 is about 4041.0663196736. The cubic root of 16330217 is about 253.7059496281.

Adding to 16330217 its reverse (71203361), we get a palindrome (87533578).

The spelling of 16330217 in words is "sixteen million, three hundred thirty thousand, two hundred seventeen".