16706216 has 8 divisors (see below), whose sum is σ = 31324170. Its totient is φ = 8353104.

The previous prime is 16706177. The next prime is 16706243. The reversal of 16706216 is 61260761.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 3818116 = 3590^2 + 1954^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044131 + ... + 1044146.

Almost surely, 2^16706216 is an apocalyptic number.

It is an amenable number.

16706216 is a deficient number, since it is larger than the sum of its proper divisors (14617954).

16706216 is a wasteful number, since it uses less digits than its factorization.

16706216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088283 (or 2088279 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 16706216 is about 4087.3238188331. The cubic root of 16706216 is about 255.6383647064.

Adding to 16706216 its reverse (61260761), we get a palindrome (77966977).

The spelling of 16706216 in words is "sixteen million, seven hundred six thousand, two hundred sixteen".