216636105 has 48 divisors (see below), whose sum is σ = 405212544. Its totient is φ = 98542080.

The previous prime is 216636047. The next prime is 216636109. The reversal of 216636105 is 501636612.

It is not a de Polignac number, because 216636105 - 2¹³ = 216627913 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (216636109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176524 + ... + 177746.

It is an arithmetic number, because the mean of its divisors is an integer number (8441928).

Almost surely, 2^216636105 is an apocalyptic number.

It is an amenable number.

216636105 is a deficient number, since it is larger than the sum of its proper divisors (188576439).

216636105 is a wasteful number, since it uses less digits than its factorization.

216636105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 216636105 is about 14718.5632790704. The cubic root of 216636105 is about 600.5884088808.

The spelling of 216636105 in words is "two hundred sixteen million, six hundred thirty-six thousand, one hundred five".