99680111 has 2 divisors, whose sum is σ = 99680112. Its totient is φ = 99680110.

The previous prime is 99680107. The next prime is 99680117. The reversal of 99680111 is 11108699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99680111 - 2² = 99680107 is a prime.

It is a super-2 number, since 2×99680111² = 19872249057944642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99680117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49840055 + 49840056.

It is an arithmetic number, because the mean of its divisors is an integer number (49840056).

Almost surely, 2^99680111 is an apocalyptic number.

99680111 is a deficient number, since it is larger than the sum of its proper divisors (1).

99680111 is an equidigital number, since it uses as much as digits as its factorization.

99680111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 99680111 is about 9983.9927383788. The cubic root of 99680111 is about 463.6634236079.

The spelling of 99680111 in words is "ninety-nine million, six hundred eighty thousand, one hundred eleven".