16065217 has 8 divisors (see below), whose sum is σ = 18993600. Its totient is φ = 13295184.

The previous prime is 16065209. The next prime is 16065227. The reversal of 16065217 is 71256061.

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

It is not a de Polignac number, because 16065217 - 2³ = 16065209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16065227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39367 + ... + 39772.

It is an arithmetic number, because the mean of its divisors is an integer number (2374200).

Almost surely, 2^16065217 is an apocalyptic number.

It is an amenable number.

16065217 is a deficient number, since it is larger than the sum of its proper divisors (2928383).

16065217 is an equidigital number, since it uses as much as digits as its factorization.

16065217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79175.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 16065217 is about 4008.1438347445. The cubic root of 16065217 is about 252.3261136549.

It can be divided in two parts, 1606521 and 7, that added together give a triangular number (1606528 = T₁₇₉₂).

The spelling of 16065217 in words is "sixteen million, sixty-five thousand, two hundred seventeen".