99711 has 10 divisors (see below), whose sum is σ = 149072. Its totient is φ = 66420.

The previous prime is 99709. The next prime is 99713. The reversal of 99711 is 11799.

It is an interprime number because it is at equal distance from previous prime (99709) and next prime (99713).

It is not a de Polignac number, because 99711 - 2¹ = 99709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 535 + ... + 696.

2⁹⁹⁷¹¹ is an apocalyptic number.

99711 is a deficient number, since it is larger than the sum of its proper divisors (49361).

99711 is a wasteful number, since it uses less digits than its factorization.

99711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1234 counting only the distinct ones).

The product of its digits is 567, while the sum is 27.

The square root of 99711 is about 315.7704862713. The cubic root of 99711 is about 46.3711312199.

The spelling of 99711 in words is "ninety-nine thousand, seven hundred eleven".