99865071 has 6 divisors (see below), whose sum is σ = 144249560. Its totient is φ = 66576708.

The previous prime is 99865069. The next prime is 99865079. The reversal of 99865071 is 17056899.

It is not a de Polignac number, because 99865071 - 2¹ = 99865069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99865079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5548051 + ... + 5548068.

Almost surely, 2^99865071 is an apocalyptic number.

99865071 is a deficient number, since it is larger than the sum of its proper divisors (44384489).

99865071 is a wasteful number, since it uses less digits than its factorization.

99865071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11096125 (or 11096122 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 99865071 is about 9993.2512727340. The cubic root of 99865071 is about 463.9500277509.

The spelling of 99865071 in words is "ninety-nine million, eight hundred sixty-five thousand, seventy-one".