20085785 has 8 divisors (see below), whose sum is σ = 25151040. Its totient is φ = 15369904.

The previous prime is 20085763. The next prime is 20085797. The reversal of 20085785 is 58758002.

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 20085785 - 2¹⁰ = 20084761 is a prime.

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, 87215 + ... + 87444.

It is an arithmetic number, because the mean of its divisors is an integer number (3143880).

Almost surely, 2^20085785 is an apocalyptic number.

It is an amenable number.

20085785 is a deficient number, since it is larger than the sum of its proper divisors (5065255).

20085785 is a wasteful number, since it uses less digits than its factorization.

20085785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174687.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 20085785 is about 4481.7167469620. The cubic root of 20085785 is about 271.8293019595.

The spelling of 20085785 in words is "twenty million, eighty-five thousand, seven hundred eighty-five".