216345635 has 8 divisors (see below), whose sum is σ = 283216176. Its totient is φ = 157342240.

The previous prime is 216345631. The next prime is 216345637. The reversal of 216345635 is 536543612.

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

It is not a de Polignac number, because 216345635 - 2² = 216345631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216345595 and 216345604.

It is not an unprimeable number, because it can be changed into a prime (216345631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1966724 + ... + 1966833.

It is an arithmetic number, because the mean of its divisors is an integer number (35402022).

Almost surely, 2^216345635 is an apocalyptic number.

216345635 is a deficient number, since it is larger than the sum of its proper divisors (66870541).

216345635 is a wasteful number, since it uses less digits than its factorization.

216345635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933573.

The product of its digits is 64800, while the sum is 35.

The square root of 216345635 is about 14708.6924979755. The cubic root of 216345635 is about 600.3198618578.

The spelling of 216345635 in words is "two hundred sixteen million, three hundred forty-five thousand, six hundred thirty-five".