99987085 has 8 divisors (see below), whose sum is σ = 130892256. Its totient is φ = 72717840.

The previous prime is 99987067. The next prime is 99987089. The reversal of 99987085 is 58078999.

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

It is a de Polignac number, because none of the positive numbers 2^k-99987085 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 1817947 = 99987085 / (9 + 9 + 9 + 8 + 7 + 0 + 8 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99987089) by changing a digit.

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, 908919 + ... + 909028.

It is an arithmetic number, because the mean of its divisors is an integer number (16361532).

Almost surely, 2^99987085 is an apocalyptic number.

It is an amenable number.

99987085 is a deficient number, since it is larger than the sum of its proper divisors (30905171).

99987085 is a wasteful number, since it uses less digits than its factorization.

99987085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817963.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 99987085 is about 9999.3542291490. The cubic root of 99987085 is about 464.1389004611.

The spelling of 99987085 in words is "ninety-nine million, nine hundred eighty-seven thousand, eighty-five".