99999065 has 8 divisors (see below), whose sum is σ = 121347720. Its totient is φ = 79100032.

The previous prime is 99999043. The next prime is 99999073. The reversal of 99999065 is 56099999.

It can be written as a sum of positive squares in 4 ways, for example, as 5442889 + 94556176 = 2333^2 + 9724^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99999065 - 2¹⁶ = 99933529 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99999065.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111914 + ... + 112803.

It is an arithmetic number, because the mean of its divisors is an integer number (15168465).

Almost surely, 2^99999065 is an apocalyptic number.

It is an amenable number.

99999065 is a deficient number, since it is larger than the sum of its proper divisors (21348655).

99999065 is a wasteful number, since it uses less digits than its factorization.

99999065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224811.

The product of its (nonzero) digits is 1771470, while the sum is 56.

The square root of 99999065 is about 9999.9532498907. The cubic root of 99999065 is about 464.1574367282.

The spelling of 99999065 in words is "ninety-nine million, nine hundred ninety-nine thousand, sixty-five".