673216111 has 2 divisors, whose sum is σ = 673216112. Its totient is φ = 673216110.

The previous prime is 673216087. The next prime is 673216129. The reversal of 673216111 is 111612376.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 673216111 - 2¹⁹ = 672691823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673216111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673216211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336608055 + 336608056.

It is an arithmetic number, because the mean of its divisors is an integer number (336608056).

Almost surely, 2^673216111 is an apocalyptic number.

673216111 is a deficient number, since it is larger than the sum of its proper divisors (1).

673216111 is an equidigital number, since it uses as much as digits as its factorization.

673216111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 673216111 is about 25946.4084412467. The cubic root of 673216111 is about 876.4318807392.

Adding to 673216111 its reverse (111612376), we get a palindrome (784828487).

The spelling of 673216111 in words is "six hundred seventy-three million, two hundred sixteen thousand, one hundred eleven".