83885085 has 16 divisors (see below), whose sum is σ = 149129280. Its totient is φ = 44738640.

The previous prime is 83885077. The next prime is 83885093. The reversal of 83885085 is 58058838.

It is an interprime number because it is at equal distance from previous prime (83885077) and next prime (83885093).

It is not a de Polignac number, because 83885085 - 2³ = 83885077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 83885085.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 310551 + ... + 310820.

It is an arithmetic number, because the mean of its divisors is an integer number (9320580).

Almost surely, 2^83885085 is an apocalyptic number.

It is an amenable number.

83885085 is a deficient number, since it is larger than the sum of its proper divisors (65244195).

83885085 is a wasteful number, since it uses less digits than its factorization.

83885085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621385 (or 621379 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The square root of 83885085 is about 9158.8801171322. The cubic root of 83885085 is about 437.7521115623.

The spelling of 83885085 in words is "eighty-three million, eight hundred eighty-five thousand, eighty-five".