99777085 has 8 divisors (see below), whose sum is σ = 119792736. Its totient is φ = 79781520.

The previous prime is 99777077. The next prime is 99777091. The reversal of 99777085 is 58077799.

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

It is not a de Polignac number, because 99777085 - 2³ = 99777077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10002 + ... + 17308.

It is an arithmetic number, because the mean of its divisors is an integer number (14974092).

Almost surely, 2^99777085 is an apocalyptic number.

It is an amenable number.

99777085 is a deficient number, since it is larger than the sum of its proper divisors (20015651).

99777085 is a wasteful number, since it uses less digits than its factorization.

99777085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10043.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The square root of 99777085 is about 9988.8480316801. The cubic root of 99777085 is about 463.8137335122.

The spelling of 99777085 in words is "ninety-nine million, seven hundred seventy-seven thousand, eighty-five".