16217005 has 8 divisors (see below), whose sum is σ = 22240512. Its totient is φ = 11120208.

The previous prime is 16216979. The next prime is 16217009. The reversal of 16217005 is 50071261.

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

It is a cyclic number.

It is not a de Polignac number, because 16217005 - 2⁵ = 16216973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16217009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231637 + ... + 231706.

It is an arithmetic number, because the mean of its divisors is an integer number (2780064).

Almost surely, 2^16217005 is an apocalyptic number.

It is an amenable number.

16217005 is a deficient number, since it is larger than the sum of its proper divisors (6023507).

16217005 is an equidigital number, since it uses as much as digits as its factorization.

16217005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463355.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 16217005 is about 4027.0342685406. The cubic root of 16217005 is about 253.1183030286.

Adding to 16217005 its reverse (50071261), we get a palindrome (66288266).

The spelling of 16217005 in words is "sixteen million, two hundred seventeen thousand, five".