99885605 has 4 divisors (see below), whose sum is σ = 119862732. Its totient is φ = 79908480.

The previous prime is 99885587. The next prime is 99885613. The reversal of 99885605 is 50658899.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55383364 + 44502241 = 7442^2 + 6671^2 .

It is not a de Polignac number, because 99885605 - 2²⁰ = 98837029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9988556 + ... + 9988565.

It is an arithmetic number, because the mean of its divisors is an integer number (29965683).

Almost surely, 2^99885605 is an apocalyptic number.

It is an amenable number.

99885605 is a deficient number, since it is larger than the sum of its proper divisors (19977127).

99885605 is a wasteful number, since it uses less digits than its factorization.

99885605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19977126.

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 99885605 is about 9994.2786132867. The cubic root of 99885605 is about 463.9818243103.

The spelling of 99885605 in words is "ninety-nine million, eight hundred eighty-five thousand, six hundred five".