99987611 has 2 divisors, whose sum is σ = 99987612. Its totient is φ = 99987610.

The previous prime is 99987593. The next prime is 99987619. The reversal of 99987611 is 11678999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99987611 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 99987611.

It is not a weakly prime, because it can be changed into another prime (99987619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49993805 + 49993806.

It is an arithmetic number, because the mean of its divisors is an integer number (49993806).

Almost surely, 2^99987611 is an apocalyptic number.

99987611 is a deficient number, since it is larger than the sum of its proper divisors (1).

99987611 is an equidigital number, since it uses as much as digits as its factorization.

99987611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 50.

The square root of 99987611 is about 9999.3805308129. The cubic root of 99987611 is about 464.1397143550.

The spelling of 99987611 in words is "ninety-nine million, nine hundred eighty-seven thousand, six hundred eleven".