216676193 has 2 divisors, whose sum is σ = 216676194. Its totient is φ = 216676192.

The previous prime is 216676189. The next prime is 216676219. The reversal of 216676193 is 391676612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157954624 + 58721569 = 12568^2 + 7663^2 .

It is a cyclic number.

It is not a de Polignac number, because 216676193 - 2² = 216676189 is a prime.

It is a super-2 number, since 2×216676193² = 93897145225946498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216676193.

It is not a weakly prime, because it can be changed into another prime (216676093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108338096 + 108338097.

It is an arithmetic number, because the mean of its divisors is an integer number (108338097).

Almost surely, 2^216676193 is an apocalyptic number.

It is an amenable number.

216676193 is a deficient number, since it is larger than the sum of its proper divisors (1).

216676193 is an equidigital number, since it uses as much as digits as its factorization.

216676193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 216676193 is about 14719.9250337765. The cubic root of 216676193 is about 600.6254524185.

The spelling of 216676193 in words is "two hundred sixteen million, six hundred seventy-six thousand, one hundred ninety-three".