99711671 has 2 divisors, whose sum is σ = 99711672. Its totient is φ = 99711670.

The previous prime is 99711641. The next prime is 99711679. The reversal of 99711671 is 17611799.

It is a strong prime.

It is an emirp because it is prime and its reverse (17611799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99711671 - 2⁶ = 99711607 is a prime.

It is a super-2 number, since 2×99711671² = 19884834667224482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99711679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49855835 + 49855836.

It is an arithmetic number, because the mean of its divisors is an integer number (49855836).

Almost surely, 2^99711671 is an apocalyptic number.

99711671 is a deficient number, since it is larger than the sum of its proper divisors (1).

99711671 is an equidigital number, since it uses as much as digits as its factorization.

99711671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814, while the sum is 41.

The square root of 99711671 is about 9985.5731432903. The cubic root of 99711671 is about 463.7123523709.

The spelling of 99711671 in words is "ninety-nine million, seven hundred eleven thousand, six hundred seventy-one".