216017105 has 8 divisors (see below), whose sum is σ = 259441512. Its totient is φ = 172666368.

The previous prime is 216017101. The next prime is 216017107. The reversal of 216017105 is 501710612.

It can be written as a sum of positive squares in 4 ways, for example, as 309136 + 215707969 = 556^2 + 14687^2 .

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 216017105 - 2² = 216017101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216017101) 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, 11744 + ... + 23873.

It is an arithmetic number, because the mean of its divisors is an integer number (32430189).

Almost surely, 2^216017105 is an apocalyptic number.

It is an amenable number.

216017105 is a deficient number, since it is larger than the sum of its proper divisors (43424407).

216017105 is a wasteful number, since it uses less digits than its factorization.

216017105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36835.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 216017105 is about 14697.5203690963. The cubic root of 216017105 is about 600.0158375449.

Adding to 216017105 its reverse (501710612), we get a palindrome (717727717).

The spelling of 216017105 in words is "two hundred sixteen million, seventeen thousand, one hundred five".