99611 has 2 divisors, whose sum is σ = 99612. Its totient is φ = 99610.

The previous prime is 99607. The next prime is 99623. The reversal of 99611 is 11699.

It is a weak prime.

It is an emirp because it is prime and its reverse (11699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99611 - 2² = 99607 is a prime.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99611.

It is not a weakly prime, because it can be changed into another prime (99661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49805 + 49806.

It is an arithmetic number, because the mean of its divisors is an integer number (49806).

2⁹⁹⁶¹¹ is an apocalyptic number.

99611 is a deficient number, since it is larger than the sum of its proper divisors (1).

99611 is an equidigital number, since it uses as much as digits as its factorization.

99611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 26.

The square root of 99611 is about 315.6121036969. The cubic root of 99611 is about 46.3556241907.

The spelling of 99611 in words is "ninety-nine thousand, six hundred eleven".