85810785 has 16 divisors (see below), whose sum is σ = 137425920. Its totient is φ = 45722880.

The previous prime is 85810741. The next prime is 85810787. The reversal of 85810785 is 58701858.

It is not a de Polignac number, because 85810785 - 2¹² = 85806689 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (85810787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20121 + ... + 24009.

It is an arithmetic number, because the mean of its divisors is an integer number (8589120).

Almost surely, 2^85810785 is an apocalyptic number.

It is an amenable number.

85810785 is a deficient number, since it is larger than the sum of its proper divisors (51615135).

85810785 is a wasteful number, since it uses less digits than its factorization.

85810785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368.

The product of its (nonzero) digits is 89600, while the sum is 42.

The square root of 85810785 is about 9263.4110887945. The cubic root of 85810785 is about 441.0765391805.

The spelling of 85810785 in words is "eighty-five million, eight hundred ten thousand, seven hundred eighty-five".