99668111 has 2 divisors, whose sum is σ = 99668112. Its totient is φ = 99668110.

The previous prime is 99668081. The next prime is 99668119. The reversal of 99668111 is 11186699.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99668111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99668119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49834055 + 49834056.

It is an arithmetic number, because the mean of its divisors is an integer number (49834056).

Almost surely, 2^99668111 is an apocalyptic number.

99668111 is a deficient number, since it is larger than the sum of its proper divisors (1).

99668111 is an equidigital number, since it uses as much as digits as its factorization.

99668111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 41.

The square root of 99668111 is about 9983.3917583154. The cubic root of 99668111 is about 463.6448168056.

The spelling of 99668111 in words is "ninety-nine million, six hundred sixty-eight thousand, one hundred eleven".