216634105 has 8 divisors (see below), whose sum is σ = 273643200. Its totient is φ = 164185776.

The previous prime is 216634091. The next prime is 216634123. The reversal of 216634105 is 501436612.

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 216634105 - 2¹¹ = 216632057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140085 + ... + 1140274.

It is an arithmetic number, because the mean of its divisors is an integer number (34205400).

Almost surely, 2^216634105 is an apocalyptic number.

It is an amenable number.

216634105 is a deficient number, since it is larger than the sum of its proper divisors (57009095).

216634105 is a wasteful number, since it uses less digits than its factorization.

216634105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280383.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 216634105 is about 14718.4953374997. The cubic root of 216634105 is about 600.5865606501.

The spelling of 216634105 in words is "two hundred sixteen million, six hundred thirty-four thousand, one hundred five".